![](assets/icon.png)
6 steps
wm1491wm1491
signature
22→42
rule
![](assets/rule.png)
{{{1, 1}, {2, 1}} -> {{2, 2}, {2, 3}, {3, 1}, {4, 3}}}
{{{1, 1}, {2, 1}} -> {{2, 2}, {2, 3}, {3, 1}, {4, 3}}}