1, 2, 3, 4, 5, 7, 8, 10, 11, 12, 13, 14, 15, 17, 18, 20, 21, 22, 23, 24, 25, 27, 28, 30, 31, 32, 33, 34, 35, 37, 38, 40, 41, 42, 43, 44, 45, 47, 48, 50, 51, 52, 53, 54, 55, 57, 58, 70, 71, 72, 73, 74, 75, 77, 78, 80, 81, 82, 83, 84, 85, 87, 88, 90, 91, 92, 93, 94, 95, 97, 98
