
5 steps
wm8842wm8842
signature
13→43
rule

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