1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 21, 3, 4, 5, 6, 7, 8, 9

1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 21, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9

1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 21, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 10, 11, 12, 14, 16, 18, 2, 20, 22, 24, 26, 28, 3, 30, 32, 34, 36, 38, 4, 40, 42, 44, 46, 48, 5, 50, 52, 54, 56, 58, 6, 60, 62, 64, 66, 68, 7, 70, 72, 8, 9