18 steps wm4396wm4396 signature 23→33 rule {{{1, 2, 3}, {4, 3, 5}} -> {{1, 5, 6}, {6, 5, 4}, {3, 2, 6}}} {{{1, 2, 3}, {4, 3, 5}} -> {{1, 5, 6}, {6, 5, 4}, {3, 2, 6}}}