EFGH

Set to 4 different clues across 5 published puzzles, most often “What I will follow” — The New York Times, Saturday, 6 March 2010.

4 letters

Every clue on record, most used first

What I will follow2 times
The New York Times — Saturday, 6 March 2010
Run after Donce
The New York Times — Tuesday, 14 November 2006
D train?once
The New York Times — Thursday, 12 September 2002
What I must follow, in a children's songonce
The New York Times — Friday, 24 July 1998