NULL
| Date | Clue |
|---|---|
| 2026-09-05 | Like the 18th Amendment, nowadays |
| 2024-03-22 | Invalid |
| 2022-03-14 | ___ and void |
| 2021-12-15 | ___ and void |
| 2020-12-24 | Zero |
| 2020-04-17 | Empty |
| 2019-06-07 | Of no value |
| 2018-06-24 | No longer in force |
| 2016-10-01 | { }, in mathematics |
| 2016-03-03 | Having no legal force |
| 2015-07-02 | Invalid |
| 2015-01-22 | Empty |
| 2014-10-29 | Void |
| 2013-08-07 | Empty, as a math set |
| 2012-10-31 | Lacking value |
| 2011-03-30 | Empty, in math |
| 2009-07-01 | Zero |
| 2009-04-06 | ___ and void |
| 2005-10-23 | Invalid |
| 2004-08-18 | Zero |
| 2004-05-05 | No longer legal |
| 2003-07-19 | Lacking any elements |
| 2003-02-17 | Without value |
| 2002-06-30 | Nonexistent |
| 2002-06-11 | Legally invalid |
| 2002-01-20 | Zero |
| 2001-08-08 | Aleph-___ |
| 2001-03-01 | Valueless |
| 2000-08-07 | Partner of void |
| 2000-08-06 | Zero |
| 1998-11-17 | Empty, in math |
| 1998-10-06 | Not valid |
| 1998-02-11 | Nonexistent |
| 1997-12-11 | Nonexistent |
| 1995-02-18 | Invalid |
| 1995-02-07 | Void's partner |
| 1995-01-17 | Void's partner |
| 1994-07-10 | Zero |