![](assets/icon.png)
6 steps
wm4319wm4319
signature
22→42
rule
![](assets/rule.png)
{{{1, 2}, {2, 3}} -> {{1, 4}, {4, 3}, {3, 2}, {2, 1}}}
{{{1, 2}, {2, 3}} -> {{1, 4}, {4, 3}, {3, 2}, {2, 1}}}