
7 steps
wm6497wm6497
signature
22→42
rule

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