Historical clue formulations

• Harmless — 2021-11-29
• Harmless — 2020-10-13
• Not harmful — 2020-05-25
• Harmless — 2018-06-08
• Harmless — 2010-07-23
• Not harmful — 2006-07-09
• Harmless — 2005-04-20
• Harmless — 2005-01-09
• Favorable — 2000-07-01