| 1, 10, 20, 21, 11, 100, 200, 201, 101, 110, 210, 211, 111, 120, 220, 221, 121, 130, 230, 231, 131, 140, 240, 241, 141, 150, 250, 251, 151, 160, 260, 261, 161, 170, 270, 271, 171, 180, 280, 281, 181, 190, 290, 291, 191, 1000, 2010, 2011, 1001, 1010, 2020
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