DRPLL
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DRPLL is the acronym for Domino Reduction Permutation of Last Layer. DRPLL is the last step of N3DR. In this step you permute all the last layer pieces while solving FR and BR (if they are swapped) with only Domino Reduction subgroup moves, as specified in N3DR page. There are 43 DRPLLs, where 21 of them are DRPLL+ (FR and BR solved cases) and 22 of them are DRPLL- (FR and BR needs to be swapped).

