PHIS
| Date | Clue |
|---|---|
| 2023-11-20 | Greek letters before chis |
| 2019-10-15 | Some college Greeks |
| 2015-03-15 | Sorority letters |
| 2007-11-07 | Fraternity letters |
| 2005-05-19 | Greek letters |
| 2003-02-02 | Diameter symbols, in math |
| 2002-04-25 | Letters from Crete |
| 1997-08-21 | Greek characters |
| 1997-02-06 | Fraternity letters |
| 1996-11-03 | Letters from Greece |
| 1995-11-21 | Key letters |