![](assets/icon.png)
4 steps
wm8345wm8345
signature
13→33
rule
![](assets/rule.png)
{{{1, 2, 3}} -> {{1, 4, 1}, {2, 4, 2}, {1, 2, 3}}}
{{{1, 2, 3}} -> {{1, 4, 1}, {2, 4, 2}, {1, 2, 3}}}