| Clue | Source | Date |
|---|---|---|
| Houses with two separate units | USA Today | 07 Oct 2022 |
| Apartments with rooms on two floors | Irish Times Simplex | 13 Jun 2022 |
| Apartments with rooms on two floors | Irish Times Simplex | 06 Sep 2019 |
| Divided houses | New York Times | 22 Feb 2015 |
| Divided houses |