| 2026-01-21 | Inflation measures, for short |
| 2026-01-19 | Letters before omegas |
| 2026-01-14 | Trident-shaped letters |
| 2025-07-06 | Pitchfork-shaped letters |
| 2025-01-08 | Pitchfork-shaped letters |
| 2022-10-24 | Trident-shaped Greek letters |
| 2022-07-03 | Symbols of wave functions |
| 2021-05-16 | Pitchfork-shaped letters |
| 2020-07-26 | Electric flux symbols |
| 2018-10-20 | Sorority letters |
| 2018-08-18 | Symbols of wave functions |
| 2018-03-07 | Trident-shaped letters |
| 2016-01-04 | Letters between chis and omegas |
| 2015-06-25 | Fraternity letters |
| 2015-04-04 | Penultimate letters |
| 2014-07-27 | Trident-shaped letters |
| 2013-11-25 | Greek letters resembling tridents |
| 2013-07-27 | Wave function symbols |
| 2013-04-11 | Greek consonants |
| 2013-02-22 | Electric flux symbols |
| 2012-12-05 | Fraternity letters |
| 2012-08-29 | Next-to-last Greek letters |
| 2012-08-26 | Sorority letters |
| 2012-03-21 | Fraternity letters |
| 2011-12-06 | Pitchfork-shaped letters |
| 2011-11-10 | Fraternity characters |
| 2011-09-12 | Letters before omegas |
| 2011-05-30 | Pitchfork-shaped letters |
| 2011-04-16 | Fraternity characters |
| 2010-08-23 | Letters after chis |
| 2009-03-29 | Fraternity letters |
| 2008-11-23 | Fraternity letters |
| 2008-09-01 | Greek letters that resemble pitchforks |
| 2008-07-01 | Greek letters that look like pitchforks |
| 2007-12-30 | Fraternity letters |
| 2007-02-22 | Characters in a frat house? |
| 2006-12-20 | Pitchfork-shaped letters |
| 2006-11-24 | Greek letters |
| 2006-10-31 | Trident-shaped letters |
| 2006-08-01 | Pitchfork-shaped letters |
| 2006-07-23 | They're trident-shaped |
| 2006-04-07 | Penultimate letters |
| 2006-03-22 | Trident-shaped letters |
| 2006-01-08 | Electric flux symbols |
| 2005-10-09 | Trident-shaped letters |
| 2005-09-20 | Trident-shaped letters |
| 2005-01-20 | Particle flux density symbols |
| 2004-12-24 | They're pitchfork-shaped |
| 2004-02-17 | Trident-shaped letters |
| 2003-06-21 | They're trident-shaped |
| 2002-04-20 | They're trident-shaped |
| 2001-05-12 | They're painted on some frat houses |
| 2001-02-25 | Trident-shaped symbols |
| 2000-11-30 | Letters that look like tridents |
| 2000-08-07 | Letters before omegas |
| 2000-06-25 | Greek penultimates |
| 1997-08-22 | Telepathy and clairvoyance, e.g. |
| 1996-02-02 | Electric flux symbols |
| 1995-01-23 | Letters before omegas |
| 1995-01-01 | Greek consonants |