
4 steps
wm3135wm3135
signature
13→43
rule

{{{1, 2, 1}} -> {{1, 3, 1}, {3, 1, 3}, {4, 2, 1}, {5, 4, 5}}}
{{{1, 2, 1}} -> {{1, 3, 1}, {3, 1, 3}, {4, 2, 1}, {5, 4, 5}}}