![](assets/icon.png)
9 steps
wm8194wm8194
signature
22→42
rule
![](assets/rule.png)
{{{1, 2}, {1, 3}} -> {{2, 4}, {2, 4}, {4, 3}, {1, 2}}}
{{{1, 2}, {1, 3}} -> {{2, 4}, {2, 4}, {4, 3}, {1, 2}}}