9 steps
wm9728wm9728
signature
22→42
rule
{{{1, 2}, {3, 2}} -> {{4, 1}, {1, 3}, {3, 4}, {4, 2}}}
{{{1, 2}, {3, 2}} -> {{4, 1}, {1, 3}, {3, 4}, {4, 2}}}
make editable copy
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