![](assets/icon.png)
19 steps
wm8897wm8897
signature
13→23
rule
![](assets/rule.png)
{{{1, 1, 2}} -> {{2, 2, 1}, {1, 2, 3}}}
{{{1, 1, 2}} -> {{2, 2, 1}, {1, 2, 3}}}