PLL (2x2x2)
PLL is the acronym for Permutation of the Last Layer. In this step, the pieces on the top layer have already been oriented (OLL (2x2x2)) so that the top face has all the same color, and they can now be moved into their solved positions.
These algorithms permute the top layer on a 2x2x2.
T  Permutation

Y  Permutation
