
7 steps
wm1458wm1458
signature
22→42
rule

{{{1, 2}, {1, 3}} -> {{2, 3}, {3, 2}, {2, 4}, {1, 4}}}
{{{1, 2}, {1, 3}} -> {{2, 3}, {3, 2}, {2, 4}, {1, 4}}}