In the questions 21 -30, each contains two pairs of groups ( of letters or letters and numbers). The pattern that appears in one pair should be followed by the other pair also. Observe the pattern carefully and fill in the blanks appropriately.
CAM : USE :: SAT : ____________
FIG : KNL :: SET : ________
DBCE : QOPR :: JLKI : _____________
SOME : _________ :: WHAT : CRYF
PCD : SGI :: BKS : _____________
LEG? : IBD4 :: SIX24 : ____________
LO12QT : PS2UX :: BE7FT : _____________
12Ⓠ22 :Ⓢ:: ___________ : 18Ⓦ28
ZY : 650 :: XW : __________
MAT : 200113 :: TOE : ___________