Historical clue formulations

• Ta-tas — 2025-08-17
• Ta-tas — 2021-05-16
• Hellos and goodbyes, in Italy — 2019-09-23
• Farewells in Florence — 2017-06-11
• Parting words — 2016-12-02
• Bye words? — 2015-01-23
• Bye lines? — 2013-11-26
• Bye lines? — 2012-02-04
• Pietro's ta-tas — 2010-09-29
• Informal byes — 2009-08-06
• Informal goodbyes — 2003-01-16
• Slangy greetings — 1998-08-22