90 steps wm78525wm78525 signature 23→33 rule {{{1, 2, 1}, {3, 4, 5}} -> {{2, 6, 2}, {5, 7, 6}, {3, 1, 5}}} {{{1, 2, 1}, {3, 4, 5}} -> {{2, 6, 2}, {5, 7, 6}, {3, 1, 5}}}