In following questions, a sequence of groups of alphabets and numbers is provided with one term missing , Choose the missing term from options.
dfe, jih, mln, ?, vut
DEF, HIJ, MNO, ?
A, CD, GHI, ?, UVWXY
FLP, INS, LPV, ?
LXF, MTJ, NPN, OLR, ?
Q1F, S2E, U6D, W21C, ?