
8 steps
wm9678wm9678
signature
22→42
rule

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