1, 2, 3, 4, 2, 6, 3, 8, 4, 7, 9, 12, 1, 11, 3, 16, 2, 13, 4, 17, 5, 20, 6, 24, 8, 14, 1, 25, 7, 21, 3, 32, 10, 22, 9, 31, 2, 23, 11, 37, 4, 26, 12, 42, 13, 29, 5, 48, 16, 33, 6, 40, 17, 28, 8, 53, 14, 36, 1, 51, 15, 35, 3, 64, 7, 46, 18, 56, 10, 44, 9, 67