Which letter cluster will replace the question mark (?) in the following series?
SUGAR, PUGAR, PYGAR, PYDAR, PYDER, ?
1
PYEDN
2
PYDEO
3
PYDEN
4
PYEDO
Which letter cluster will replace the question mark (?) in the following series?
SUGAR, PUGAR, PYGAR, PYDAR, PYDER, ?