7 steps
wm1172wm1172
signature
22→42
rule
{{{1, 2}, {3, 2}} -> {{4, 1}, {4, 2}, {1, 2}, {4, 3}}}
{{{1, 2}, {3, 2}} -> {{4, 1}, {4, 2}, {1, 2}, {4, 3}}}
make editable copy
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