| 2020-09-12 | "Them" |
| 2019-09-22 | Doctor Doom and Galactus, to the Fantastic Four |
| 2018-10-23 | Communists and capitalists, e.g. |
| 2017-09-10 | North and South Korea, e.g. |
| 2017-02-16 | Pakistan and India, e.g. |
| 2016-06-10 | Adams and Jefferson, e.g. |
| 2016-05-02 | All the people attacking you |
| 2010-04-18 | Exes, sometimes |
| 2009-06-27 | They're opposed |
| 2004-10-18 | Foes |
| 2004-07-09 | They may be sworn |
| 2003-10-03 | Ones at the gate, maybe |
| 2002-09-14 | "Wise men learn much from ___": Aristophanes |
| 2001-12-01 | Opposite sides |
| 1999-11-19 | Hostiles |
| 1998-05-16 | "A man cannot be too careful in the choice of his ___": Wilde |
| 1998-04-02 | Kind of list |
| 1997-11-07 | Opposing forces |
| 1997-04-27 | Them |
| 1995-11-12 | "...and the fourth for mine _____": Addison |
| 1995-10-21 | Isaac Bashevis Singer novel |
| 1995-08-13 | Opposite sides |
| 1994-04-20 | _____ list |
| 1994-04-17 | Hatfields and Mccoys, e.g. |