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 form the given options, select the pair that follows the logic.
TORPEDO : DEOOPRT
FLICKER : CEFIKLR
APERTAIN : AEINPRT
BCURTAIN : RUCNIAT
CCLOUSURE : OLCERUS
DCYNICAL : ACCLINY