Which letter cluster will replace the question mark (?) in the following series?
PLQG, RLSG, TLUG, ?, XLYG, ZLAG
1
VLGW
2
VWLG
3
VLWG
4
LVWG
Which letter cluster will replace the question mark (?) in the following series?
PLQG, RLSG, TLUG, ?, XLYG, ZLAG