13 steps wm5667wm5667 signature 23→33 rule {{{1, 2, 3}, {2, 4, 5}} -> {{3, 6, 3}, {2, 4, 6}, {4, 1, 5}}} {{{1, 2, 3}, {2, 4, 5}} -> {{3, 6, 3}, {2, 4, 6}, {4, 1, 5}}}