![](assets/icon.png)
7 steps
wm7465wm7465
signature
13→23
rule
![](assets/rule.png)
{{{1, 2, 3}} -> {{1, 2, 2}, {4, 1, 3}}}
{{{1, 2, 3}} -> {{1, 2, 2}, {4, 1, 3}}}