1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 34, 35, 36, 37, 38, 40, 42, 45, 49, 50, 51, 59, 60, 63, 64, 70, 71, 72, 80, 81, 84, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 and 100 are already taken.
