5 steps wm4354wm4354 signature 13→43 rule {{{1, 1, 2}} -> {{2, 2, 3}, {3, 2, 3}, {2, 1, 1}, {1, 1, 3}}} {{{1, 1, 2}} -> {{2, 2, 3}, {3, 2, 3}, {2, 1, 1}, {1, 1, 3}}}