![](assets/icon.png)
3 steps
wm6947wm6947
signature
12→42
rule
![](assets/rule.png)
{{{1, 2}} -> {{3, 2}, {3, 4}, {2, 4}, {1, 3}}}
{{{1, 2}} -> {{3, 2}, {3, 4}, {2, 4}, {1, 3}}}