![](assets/icon.png)
3 steps
wm2672wm2672
signature
12→42
rule
![](assets/rule.png)
{{{1, 2}} -> {{3, 1}, {1, 3}, {3, 2}, {4, 3}}}
{{{1, 2}} -> {{3, 1}, {1, 3}, {3, 2}, {4, 3}}}