1, 2, 6, 3, 4, 8, 9, 11, 10, 12, 14, 5, 15, 16, 18, 20, 7, 21, 13, 24, 27, 22, 26, 28, 23, 25, 30, 32, 33, 31, 34, 35, 40, 44, 55, 36, 37, 39, 17, 42, 45, 38, 46, 48, 50, 19, 57, 52, 41, 62, 43, 54, 56, 58, 60, 64, 51, 63, 66, 49, 70, 77, 68, 69, 72, 75, 74, 76