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6 steps
wm3262wm3262
signature
13→43
rule
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{{{1, 2, 2}} -> {{1, 3, 1}, {1, 3, 3}, {3, 4, 2}, {2, 4, 4}}}
{{{1, 2, 2}} -> {{1, 3, 1}, {1, 3, 3}, {3, 4, 2}, {2, 4, 4}}}