RULEONE
Set to 2 different clues across 2 published puzzles, most often “The primary instruction” — The New York Times, Sunday, 3 July 2011.
7 letters
Every clue on record, most used first
- The primary instructiononce
The New York Times — Sunday, 3 July 2011
- Starting guideonce
The New York Times — Saturday, 18 September 2004