Last Four Corners

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Last four corners, abbrevaited L4C, is a method that solves the last layer corners preserving all the rest.

Because edges are solved at this point you cannot AUF as in CxLL so the number of cases is quadrupled, but because you cannot have parity that is reduced again by factor 2. The orientations are the usual seven COs plus the solved case (CPLL). The permutatins (with fix position orientations) that occure are A-PLL a or b from all four angles, the two possible ways of E-PLL and finally X-PLL that is H-PLL + U2 giving a total of twelve possible permutations.