9 steps
wm4691wm4691
signature
22→42
rule
{{{1, 2}, {1, 3}} -> {{1, 4}, {1, 2}, {4, 2}, {3, 4}}}
{{{1, 2}, {1, 3}} -> {{1, 4}, {1, 2}, {4, 2}, {3, 4}}}
make editable copy
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