171 steps wm8446wm8446 signature 23→33 rule {{{1, 1, 2}, {3, 4, 5}} -> {{6, 6, 3}, {4, 1, 6}, {1, 2, 7}}} {{{1, 1, 2}, {3, 4, 5}} -> {{6, 6, 3}, {4, 1, 6}, {1, 2, 7}}}