99 steps wm6197wm6197 signature 23→43 rule {{{1, 2, 2}, {3, 4, 5}} -> {{6, 3, 6}, {6, 4, 7}, {5, 7, 7}, {5, 1, 8}}} {{{1, 2, 2}, {3, 4, 5}} -> {{6, 3, 6}, {6, 4, 7}, {5, 7, 7}, {5, 1, 8}}}