[0,1,11,111,1111,11111,111111,1111111,2,12,112, 1112,11112,111112,1111112,11111112,22,122,1122, 11122,111122,1111122,11111122,111111122,222,1222, 11222,3,13,113,1113,11113,2222,12222,112222,23, 123,1123,11123]