1, 2, 3, 5, 6
1, 2, 3, 5, 6, 10, 11, 12, 3, 4, 5, 6, 8, 9
1, 2, 3, 5, 6, 10, 11, 12, 3, 4, 5, 6, 8, 9, 1, 10, 12, 14, 2, 6, 8