
6 steps
wm9568wm9568
signature
22→42
rule

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