| Clue | Source | Date |
|---|---|---|
| The number 4 and the gift of a clock, in Chinese culture | New York Times | 29 Nov 2025 |
| Throwing out a chain letter, and others | LA Times Daily | 09 Apr 2017 |
| Throwing out a chain letter, and others | The Washington Post | 09 Apr 2017 |
| Signs of impending trouble | Newsday | 13 Feb 2017 |
| Throwing out a chain letter, and others | ||
| Dark clouds, e.g. | ||
| Signs you wish you could ignore | ||
| Signs you wish you could ignore | ||
| Black cats, e.g. |