192 steps wm6891wm6891 signature 23→33 rule {{{1, 2, 1}, {3, 2, 4}} -> {{4, 1, 4}, {3, 4, 1}, {2, 4, 5}}} {{{1, 2, 1}, {3, 2, 4}} -> {{4, 1, 4}, {3, 4, 1}, {2, 4, 5}}}