1, 10, 11, 12, 13, 14, 15, 16, 17, 19, 2, 20, 21, 22, 23, 3, 4, 5, 6, 7
1, 10, 11, 12, 13, 14, 15, 16, 17, 19, 2, 20, 21, 22, 23, 3, 4, 5, 6, 7, 1, 2, 4, 5, 7