18 steps wm1495wm1495 signature 23→43 rule {{{1, 2, 3}, {4, 2, 5}} -> {{1, 6, 6}, {6, 4, 7}, {2, 6, 3}, {3, 8, 5}}} {{{1, 2, 3}, {4, 2, 5}} -> {{1, 6, 6}, {6, 4, 7}, {2, 6, 3}, {3, 8, 5}}}