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
UNCG : FMXT
1
FTZN : UGVW
2
DHEL : WSVO
3
VQCX : EPXZ
4
TNDK : GMRP