18 steps wm4236wm4236 signature 23→33 rule {{{1, 2, 3}, {4, 2, 5}} -> {{2, 6, 3}, {6, 1, 2}, {1, 4, 2}}} {{{1, 2, 3}, {4, 2, 5}} -> {{2, 6, 3}, {6, 1, 2}, {1, 4, 2}}}