34 steps wm4148wm4148 signature 23→43 rule {{{1, 2, 1}, {3, 4, 5}} -> {{6, 7, 6}, {7, 8, 1}, {1, 7, 2}, {5, 7, 3}}} {{{1, 2, 1}, {3, 4, 5}} -> {{6, 7, 6}, {7, 8, 1}, {1, 7, 2}, {5, 7, 3}}}