![](assets/icon.png)
6 steps
wm5637wm5637
signature
13→33
rule
![](assets/rule.png)
{{{1, 2, 1}} -> {{2, 3, 2}, {3, 4, 3}, {4, 1, 2}}}
{{{1, 2, 1}} -> {{2, 3, 2}, {3, 4, 3}, {4, 1, 2}}}