1, 2, 3, 4, 6, 5, 7, 8, 9, 10, 12, 15, 14, 11, 13, 16, 18, 20, 21, 22, 24, 25, 27, 30, 28, 32, 36, 40, 35, 33, 26, 17, 19, 23, 29, 31, 34, 38, 39, 42, 44, 45, 48, 50, 49, 54, 60, 56, 55, 52, 51, 57, 46, 58, 62, 37, 41, 43, 47, 53, 59, 61, 63, 64, 72, 75, 70