ITSI
| Date | Clue |
|---|---|
| 2012-03-18 | Formal/informal reply to "Who's there?" |
| 2010-11-11 | Formal/informal response to "Who's there?" |
| 2006-06-29 | Odd-sounding albeit grammatical answer to "Who's there?" |
| Date | Clue |
|---|---|
| 2012-03-18 | Formal/informal reply to "Who's there?" |
| 2010-11-11 | Formal/informal response to "Who's there?" |
| 2006-06-29 | Odd-sounding albeit grammatical answer to "Who's there?" |