18 steps wm4256wm4256 signature 23→33 rule {{{1, 2, 3}, {4, 5, 3}} -> {{6, 2, 3}, {3, 2, 4}, {1, 6, 5}}} {{{1, 2, 3}, {4, 5, 3}} -> {{6, 2, 3}, {3, 2, 4}, {1, 6, 5}}}