
8 steps
wm1788wm1788
signature
22→42
rule

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