Historical clue formulations

• Remove a plug from — 2024-06-09
• Open, as a drain — 2023-11-19
• Pull a cork from — 2019-09-12
• Pull a cork out of — 2012-03-21
• Remove a clog from — 2000-04-03
• Clear, as a drain — 1999-07-12
• Clear — 1997-09-13