
6 steps
wm9922wm9922
signature
13→33
rule

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