1974957489 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 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 2 1 2 1 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 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 2 1 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 3 1 2 1 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 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 2 1 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 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 2 1 2 1 2 1 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 2 1 2 1 2 1 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 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 3 1 2 1 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 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 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 2 1 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 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 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 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 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 3 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 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 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 2 1 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 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 3 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 3 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 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 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 3 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 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 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 3 1 2 1 2 1 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 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 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 2 1 2 1 2 1 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 2 1 3 1 2 1 2 1 2 1 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 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 2 1 2 1 2 1 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 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 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 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 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 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 2 1 2 1 3 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 3 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 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 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 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 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 3 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 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 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 2 1 3 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 3 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 3 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 3 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 2 1 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 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 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 3 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 2 1 2 1 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 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 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 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 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 2 1 2 1 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 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 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 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 2 1 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 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 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 3 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 2 1 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 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 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 2 1 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 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 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 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 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 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 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 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 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 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 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 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 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 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 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 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 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 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 2 1 2 1 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 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 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 3 1 2 1 3 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 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 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 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 2 1 2 1 2 1 3 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 2 1 2 1 2 1 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 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 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 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 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 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 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 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 2 1 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 3 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 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 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 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 3 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 2 1 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 2 1 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 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 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 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 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 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 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 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 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 2 1 2 1 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 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 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 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 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 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 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 3 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 2 1 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 2 1 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 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 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 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 2 1 2 1 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 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 2 1 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 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 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 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 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 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 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 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 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 2 1 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 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 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 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 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 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 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 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 3 1 2 1 2 1 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 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 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 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 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 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 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 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 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 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 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 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 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 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 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 2 1 2 1 2 1 2 1 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 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 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 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 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 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 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 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 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 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 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 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 2 1 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 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 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 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 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 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 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 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 2 1 2 1 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 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 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 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 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 2 1 2 1 2 1 2 1 2 1 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 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 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 2 1 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 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 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 2 1 2 1 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 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 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 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 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 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 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 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 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 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 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 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 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 2 1 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 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 2 1 2 1 2 1 2 1 2 1 3 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 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 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 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 2 1 3 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 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 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 3 1 2 1 2 1 2 1 2 1 2 1 2 1 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 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 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 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 2 1 2 1 2 1 2 1 2 1 2 1 3 1 3 1 2 1 2