50 steps wm5819wm5819 signature 23→43 rule {{{1, 1, 2}, {3, 4, 5}} -> {{5, 5, 6}, {7, 6, 8}, {2, 8, 9}, {1, 4, 7}}} {{{1, 1, 2}, {3, 4, 5}} -> {{5, 5, 6}, {7, 6, 8}, {2, 8, 9}, {1, 4, 7}}}