
7 steps
wm87544wm87544
signature
22→42
rule

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