15 steps
wm6584wm6584
signature
1213→2223
rule
{{{1, 2, 3}, {4, 2}} -> {{1, 3, 3}, {4, 2, 5}, {2, 3}, {2, 5}}}
{{{1, 2, 3}, {4, 2}} -> {{1, 3, 3}, {4, 2, 5}, {2, 3}, {2, 5}}}
make editable copy
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