1934193447 3
1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 3 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 3 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2