1, 11, 12, 13, 14, 15, 16, 17, 18, 2, 21, 22, 23, 25, 26, 27, 28, 29, 3, 30, 31, 32, 33, 34, 35, 36, 39, 4, 40, 41, 42, 43, 45, 46, 49, 50, 6, 7, 8, 9