| 2026-05-04 | Like some columns and bonds |
| 2025-07-14 | Like some chemical bonds |
| 2024-02-12 | Kind of bond in chemistry |
| 2024-02-11 | Kind of bond |
| 2023-11-21 | Greek column style |
| 2023-10-27 | Like the bonds of table salt |
| 2022-12-28 | Kind of chemical bond |
| 2020-11-17 | Charged for a chemistry class? |
| 2020-11-08 | Kind of chemical bond in salts |
| 2020-05-10 | Kind of column seen on the Jefferson Memorial |
| 2019-11-14 | Column style |
| 2019-07-10 | Kind of column |
| 2019-05-19 | Alternative to Corinthian |
| 2018-08-06 | Like some Greek columns |
| 2017-12-01 | Like some bonds |
| 2017-08-07 | Greek column style |
| 2017-04-28 | Like some columns |
| 2017-04-15 | ___ compound |
| 2017-04-11 | Kind of bond in chemistry |
| 2016-07-12 | Architectural column style |
| 2016-05-05 | Like some Greek columns |
| 2016-02-24 | Column style |
| 2015-07-01 | Classical column style |
| 2015-04-25 | Kind of bond |
| 2015-03-16 | Greek column variety |
| 2014-06-18 | Column style |
| 2013-02-28 | Like some columns |
| 2013-01-09 | With 44-Down, features of some Greek architecture |
| 2012-09-30 | Greek architectural style |
| 2012-04-01 | Like some columns |
| 2011-10-25 | Greek column style |
| 2011-07-15 | Counterpart of covalent |
| 2011-05-23 | Kind of column |
| 2011-04-27 | Column order |
| 2010-05-16 | Kind of column |
| 2009-11-19 | Old Greek dialect |
| 2009-08-16 | Like some bonds |
| 2009-04-27 | Kind of column, in architecture |
| 2009-04-01 | Column style |
| 2008-09-29 | Charged, as particles |
| 2008-08-07 | Like some columns |
| 2008-01-25 | Corinthian alternative |
| 2007-06-06 | Ancient Greek dialect |
| 2007-05-08 | Column style |
| 2007-02-08 | Like some chemical bonds |
| 2006-03-23 | Kind of column |
| 2005-05-25 | Charged, in a way |
| 2004-10-12 | Column style |
| 2004-06-26 | Column choice |
| 2002-12-24 | Greek column style |
| 2002-11-29 | Like some chemical bonds |
| 2002-11-17 | Kind of order |
| 2002-07-04 | Like some architecture |
| 2002-03-30 | Charged |
| 2001-11-08 | Greek column type |
| 2001-06-03 | Charged, in a way |
| 2001-01-22 | Like some classical columns |
| 2000-11-23 | Kind of column |
| 2000-09-18 | Like some Greek columns |
| 2000-08-20 | Charged |
| 1999-10-18 | Greek column style |
| 1999-07-29 | That's an order! |
| 1999-05-20 | Charged |
| 1998-09-10 | Kind of column |
| 1997-05-18 | Alternative to Corinthian |
| 1997-01-18 | Like some columns |
| 1996-10-09 | Like some columns |
| 1995-11-27 | Like some Greek columns |
| 1995-03-31 | Charged, in a way |
| 1994-01-06 | Type of column |