![](assets/icon.png)
9 steps
wm3169wm3169
signature
13→23
rule
![](assets/rule.png)
{{{1, 2, 1}} -> {{3, 3, 3}, {2, 3, 1}}}
{{{1, 2, 1}} -> {{3, 3, 3}, {2, 3, 1}}}