| Answer | Crossword Clue |
|---|---|
| ISI | "It ..." (formal answer to "Who's there?") |
| ITISI | Formal answer to "Who's there?" |
| ITISI | Formal answer to "Who's at the door?" |
| ISI | "It ..." (answer to "Who's there?") |
| ITISI | Formal "Who's there?" answer |
| ISI | "It ..." (formal "Who's there?" reply) |
| ISI | "It ..": formal "Who's there?" response |
