![](assets/icon.png)
21 steps
wm7448wm7448
signature
22→32
rule
![](assets/rule.png)
{{{1, 2}, {2, 3}} -> {{1, 4}, {1, 3}, {4, 3}}}
{{{1, 2}, {2, 3}} -> {{1, 4}, {1, 3}, {4, 3}}}