50 steps
wm4393wm4393
signature
23→43
rule
{{{1, 2, 1}, {3, 4, 5}} -> {{6, 6, 6}, {2, 7, 6}, {8, 7, 9}, {3, 4, 2}}}
{{{1, 2, 1}, {3, 4, 5}} -> {{6, 6, 6}, {2, 7, 6}, {8, 7, 9}, {3, 4, 2}}}
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