Historical clue formulations

• Convertible, casually — 2024-12-08
• Convertible, in slang — 2018-09-24
• Convertible — 2017-03-31
• Convertible, in slang — 2013-06-19
• Convertible — 2012-04-13
• Convertible — 2011-09-11
• Convertible, informally — 2001-03-27
• Convertible — 1999-10-21