I was copy pasting the sentence:
A puzzle is _____ turning if the puzzle can turn on the _____ of the polyhedra it is designed upon.
While highlighting the word with the mouse and typing in the blank space, I realized that "face" "vertex" and "edge" are all left handed words. i.e. when typing on a keyboard, you can type all three of those words with only your left hand (using the traditional "left index on F, right index on J").
Figured somebody might get a kick out of this,