ITERS
| Date | Clue |
|---|---|
| 2016-06-18 | Things that lead to Rome? |
| 2015-09-22 | Roman roads |
| 2013-11-17 | Roman roads |
| 2013-02-23 | Cerebral canals |
| 2011-09-09 | Anatomical aqueducts |
| 2011-07-07 | Anatomical passageways |
| 2009-05-04 | Anatomical passages |
| 2009-02-22 | Anatomical passages |
| 2007-09-06 | Anatomical passages |
| 2004-09-05 | Anatomical passages |
| 2003-03-30 | Brain passages |
| 2002-02-09 | Anatomical canals |
| 2000-09-16 | Sinuses, e.g. |
| 1996-11-09 | Anatomical canals |
| 1996-05-23 | Roman roads |