| Clue | Source | Date |
|---|---|---|
| *"I can't tell the difference between them" | ||
| "How do you tell them apart?" | LA Times Daily | 11 Jun 2024 |
| *"How can you tell them apart?" | ||
| Disambiguation request | Newsday | 28 Feb 2020 |
| A question of double identity? | The Telegraph Cryptic | 02 Nov 2015 |
| Question when you can't tell two things apart | ||
| "How do you tell the difference?" |