198 steps wm6894wm6894 signature 23→33 rule {{{1, 2, 2}, {2, 3, 4}} -> {{1, 1, 4}, {5, 4, 4}, {4, 3, 5}}} {{{1, 2, 2}, {2, 3, 4}} -> {{1, 1, 4}, {5, 4, 4}, {4, 3, 5}}}