99 steps wm8486wm8486 signature 23→43 rule {{{1, 2, 2}, {3, 4, 5}} -> {{6, 4, 4}, {4, 5, 7}, {5, 1, 7}, {3, 1, 7}}} {{{1, 2, 2}, {3, 4, 5}} -> {{6, 4, 4}, {4, 5, 7}, {5, 1, 7}, {3, 1, 7}}}