11, 22, 33, 44, 55, 66, 77, 88, 99, 100, 111, 21, 31, 41, 51, 61, 71, 81, 91, 200, 112, 222, 32, 42, 52, 62, 72, 82, 92, 300, 113, 223, 333, 43, 53, 63, 73, 83, 93, 400, 114, 224, 334, 444, 54, 64, 74, 84, 94, 500, 115, 225, 335, 445, 555, 65, 75, 85, 95, 600, 116, 226, 336, 446, 556, 666, 76, 86, 96, 700