![](assets/icon.png)
6 steps
wm1714wm1714
signature
23→43
rule
![](assets/rule.png)
{{{1, 2, 3}, {4, 5, 6}} -> {{7, 7, 1}, {1, 2, 4}, {3, 7, 2}, {7, 8, 9}}}
{{{1, 2, 3}, {4, 5, 6}} -> {{7, 7, 1}, {1, 2, 4}, {3, 7, 2}, {7, 8, 9}}}