| Clue | Source | Date |
|---|---|---|
| Reliable basis of belief | Newsday | 07 Mar 2021 |
| Firm place to plant your feet | New York Times | 03 Aug 2020 |
| Spot #3 | Wall Street Journal | 19 May 2018 |
| Spot #3 | ||
| Place for firm footing | USA Today | 22 May 2017 |
| Place for firm footing | ||
| Where to stand firm? | ||
| Where to stand firm? | ||
| Where to stand firm? | ||
| Firm position |