| Clue | Source | Date |
|---|---|---|
| Groups within groups | New York Times | 17 Jul 2022 |
| Primes and squares, with regard to the integers | Wall Street Journal | 29 Dec 2021 |
| Groups within groups | Newsday | 14 Jun 2017 |
| Groups within groups | USA Today | 24 May 2015 |
| Groups within groups | ||
| Groups within groups | ||
| Groups within groups | ||
| Venn-diagram sections | ||
| Math groups | ||
| Inner circles in Venn diagrams | ||
| Venn diagram areas | ||
| Groups with groups | ||
| Small groups within large groups | ||
| Small groups within large groups | ||
| Groups within groups | ||
| Divides up | ||
| Circles within circle, in Venn diagrams | ||
| Groups within groups |