[1,2,12,22,122,3,13,23,123,223,1223,33,133,233, 1233,2233,12233,333,1333,2333,12333,22333,122333, 4,14,24,124,224,1224,34,134,234,1234,2234,12234, 334,1334,2334,12334,22334]