
7 steps
wm6397wm6397
signature
22→42
rule

{{{1, 2}, {1, 3}} -> {{4, 1}, {1, 2}, {2, 4}, {4, 3}}}
{{{1, 2}, {1, 3}} -> {{4, 1}, {1, 2}, {2, 4}, {4, 3}}}