![](assets/icon.png)
4 steps
wm9775wm9775
signature
13→43
rule
![](assets/rule.png)
{{{1, 2, 1}} -> {{2, 3, 2}, {2, 3, 2}, {4, 3, 1}, {1, 5, 1}}}
{{{1, 2, 1}} -> {{2, 3, 2}, {2, 3, 2}, {4, 3, 1}, {1, 5, 1}}}