![](assets/icon.png)
3 steps
wm8698wm8698
signature
12→42
rule
![](assets/rule.png)
{{{1, 2}} -> {{1, 2}, {2, 1}, {3, 1}, {4, 2}}}
{{{1, 2}} -> {{1, 2}, {2, 1}, {3, 1}, {4, 2}}}