HADI
Set to 5 different clues across 5 published puzzles, most often "___ known then ..." — The New York Times, Sunday, 23 September 2007.
4 letters
Every clue on record, most used first
- "___ known then ..."once
The New York Times — Sunday, 23 September 2007
- "___ known ..."once
The New York Times — Sunday, 16 September 2001
- "___ known then..."once
The New York Times — Sunday, 18 June 2000
- "___ but known..."once
The New York Times — Sunday, 21 May 2000
- "_____ known then what..."once
The New York Times — Monday, 20 June 1994