In the given letter-cluster pairs, the first letter-cluster is related to the second letter-cluster following a certain logic. Study the given pairs carefully, and from the given options, select the pair that follows the same logic.
KDRB: PWIY
UNGC: FMTX
AFTZN: UGVW
BDHEL: WSVO
CVQCX: EPXZ
DTNDK: GMRP