Filed from 2 published puzzles

OPQ

Set to 2 different clues across 2 published puzzles, most often “Alphabetic trio” — The New York Times, Sunday, 29 November 2009.

3 letters

Every clue on record, most used first

Alphabetic trioonce
The New York Times — Sunday, 29 November 2009
Alphabet trioonce
The New York Times — Thursday, 8 March 2001

Other answers to these clues

BCD3 letters
CDE3 letters
EFG3 letters
FGH3 letters
GHI3 letters
HIJ3 letters
IJK3 letters
LMN3 letters
MNO3 letters
NOP3 letters
RST3 letters
STU3 letters