99 steps wm6513wm6513 signature 23→43 rule {{{1, 2, 1}, {3, 4, 5}} -> {{3, 6, 3}, {2, 3, 1}, {1, 7, 6}, {2, 7, 8}}} {{{1, 2, 1}, {3, 4, 5}} -> {{3, 6, 3}, {2, 3, 1}, {1, 7, 6}, {2, 7, 8}}}