INSTS
Set to 2 different clues across 4 published puzzles, most often “Schools for engrs.” — The New York Times, Wednesday, 10 May 2006.
5 letters
Every clue on record, most used first
- Schools for engrs.3 times
The New York Times — Wednesday, 10 May 2006
- Sci. facilitiesonce
The New York Times — Thursday, 4 March 2004