1, 10, 2, 3, 4, 6, 8
1, 10, 2, 3, 4, 6, 8, 1, 10, 11, 12, 14, 16, 17, 18, 19, 2, 20, 22, 24, 28, 3, 30, 4, 5, 6, 8