
9 steps
wm9481wm9481
signature
22→42
rule

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