![](assets/icon.png)
14 steps
wm7915wm7915
signature
22→32
rule
![](assets/rule.png)
{{{1, 2}, {2, 3}} -> {{1, 4}, {1, 2}, {4, 3}}}
{{{1, 2}, {2, 3}} -> {{1, 4}, {1, 2}, {4, 3}}}