Historical clue formulations

• Invalidates — 2023-11-23
• Cancels — 2023-10-21
• Renders null — 2022-01-31
• Cancels — 2016-03-16
• Renders null — 2012-02-20
• Empty spaces — 2011-11-06
• Nullifies — 2005-01-17
• Annuls — 1999-03-17