![](assets/icon.png)
9 steps
wm8734wm8734
signature
22→42
rule
![](assets/rule.png)
{{{1, 2}, {1, 3}} -> {{1, 2}, {1, 4}, {2, 4}, {4, 3}}}
{{{1, 2}, {1, 3}} -> {{1, 2}, {1, 4}, {2, 4}, {4, 3}}}