1, 10, 11, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 26, 27, 29, 30, 31, 32, 33, 34, 36, 37, 40, 41, 42, 43, 44, 45, 49, 5, 50, 51, 6, 7, 9