English

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Etymology

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The wrong pieces form a T. "Perm" means permutation.

 
This is where the pieces of the last layer need to go.

Noun

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T perm (plural T perms)

  1. (Rubik's Cube) A PLL case (i.e. a case where the cubies of the last layer all have the last-side colour facing the last side) where a pair of opposite edge cubies and a pair of corner cubies that lie on either side of one of the wrong edges both need to be swapped.

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