2 Look PLL ( Permutation of the Last Layer). Press question mark to learn the rest of the keyboard shortcuts. Corner twisting algorithm - R' D' R D Edge insertion algorithm (U R U' R') (U' F' U F) or (U' L' U L) (U F U' F') depending if you need to insert it on the right slot or left after lining up edge with center color. Close. What do you think? The PermSort algorithm is due * to Patrick Morin