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