13 steps
wm4673wm4673
signature
22→42
rule
{{{1, 1}, {2, 3}} -> {{2, 2}, {2, 1}, {2, 3}, {4, 2}}}
{{{1, 1}, {2, 3}} -> {{2, 2}, {2, 1}, {2, 3}, {4, 2}}}
make editable copy
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