198 steps wm3673wm3673 signature 23→33 rule {{{1, 2, 1}, {2, 3, 4}} -> {{5, 4, 5}, {5, 3, 1}, {2, 5, 1}}} {{{1, 2, 1}, {2, 3, 4}} -> {{5, 4, 5}, {5, 3, 1}, {2, 5, 1}}}