In this series, you will be looking at both the letter pattern and the number pattern. Fill the blank in the middle of the series or the end of the series. SCD, TEF, UGH, ____, WKL
B2CD, _____, BCD4, B5CD, BC6D
FAG, GAF, HAI, IAH, ____
ELFA, GLHA, ILJA, _____, MLNA
CMM, EOO, GQQ, _____, KUU
ZA5, Y4B, XC6, W3D, ____
QPO, NML, KJI, _____, EDC
JAK, KBL, LCM, MDN, _____
BCB, DED, FGF, HIH, ___
P5QR, P4QS, P3QT, _____, P1QV