[1,2,21,211,212,2111,2112,2122,21111,21112,21121,
21122,21221,21222,211111,211112,211121,211122,
211221,211222,212211,212221,212222,2111111,
2111112,2111121,2111122,2111211,2111221,2111222,
2112121,2112211,2112221,2112222,2122111,2122112,
2122121,2122211,2122212,2122221,2122222]
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