[[2], [3, 4, 5, 6, 7, 8, 9], [0, 3, 4, 5, 6, 7, 8], [1, 2, 4, 5, 6, 7, 8], [1, 2, 3, 5, 6, 7, 8], [1, 2, 3, 4, 6, 7, 8], [1, 2, 3, 4, 5, 7, 8], [1, 2, 3, 4, 5, 6, 8], [1, 2, 3, 4, 5, 6, 7], [1]]
5
1 3 4 2 10