Historical clue formulations

• Is inadequate — 2024-11-10
• Is insufficient — 2024-01-25
• Is unacceptable — 2016-02-28
• Is unsatisfactory — 2015-08-09
• Falls short — 2012-01-28
• Is unacceptable — 2006-07-08
• Is inadequate — 2001-03-31