REECHO
| Date | Clue |
|---|---|
| 2021-09-05 | Come back again (again ... again ...) |
| 2012-08-21 | Bounce around a canyon, say |
| 2011-07-22 | Come back again |
| 2006-08-06 | Come back again |
| 2003-08-17 | Have a canyonlike effect |
| 1998-10-15 | Come back again |
| 1997-11-22 | Deep canyon feature |
| 1997-06-05 | Come back again |