![](assets/icon.png)
8 steps
wm2555wm2555
signature
22→42
rule
![](assets/rule.png)
{{{1, 2}, {2, 3}} -> {{3, 4}, {3, 4}, {3, 1}, {1, 2}}}
{{{1, 2}, {2, 3}} -> {{3, 4}, {3, 4}, {3, 1}, {1, 2}}}