Historical clue formulations

• Couples — 2022-12-03
• Joins — 2021-11-13
• They join teams — 2016-02-05
• Symbols of servitude — 2015-03-04
• Gets the team together? — 2014-12-03
• Joins, as oxen — 2010-02-08
• Couples — 2004-03-18
• Joins the team? — 1997-05-13
• Couples — 1994-04-03