1, 2, 3, 4, 6, 5, 7, 9, 10, 8, 11, 13, 14, 15, 12, 16, 18, 19, 21, 20, 17, 22, 24, 25, 27, 28, 26, 23, 29, 31, 32, 34, 36, 35, 33, 30, 37, 39, 40, 42, 44, 45, 43, 41, 38, 46, 48, 49, 51, 53, 54, 55, 52, 50, 47, 56, 58, 59, 61, 63, 64, 66, 65, 62, 60, 57, 67, 69, 70
