![](assets/icon.png)
7 steps
wm5452wm5452
signature
22→42
rule
![](assets/rule.png)
{{{1, 2}, {2, 3}} -> {{3, 3}, {4, 3}, {4, 1}, {2, 1}}}
{{{1, 2}, {2, 3}} -> {{3, 3}, {4, 3}, {4, 1}, {2, 1}}}