99 steps wm4734wm4734 signature 23→43 rule {{{1, 1, 2}, {3, 4, 5}} -> {{4, 4, 6}, {7, 4, 6}, {8, 6, 3}, {2, 8, 9}}} {{{1, 1, 2}, {3, 4, 5}} -> {{4, 4, 6}, {7, 4, 6}, {8, 6, 3}, {2, 8, 9}}}