Historical clue formulations

• Fleur-de-___ — 2025-02-10
• River of France and Belgium — 2022-09-15
• Fleur-de-___ — 2017-09-20
• River of France and Belgium — 2017-06-28
• Fleur-de-___ — 2016-06-15
• Fleur-de-___ — 2014-08-12
• Fleur-de-___ — 2014-06-26
• Fleur-de-___ — 2013-04-25
• Fleur-de-___ — 2013-02-12
• Fleur-de-___ — 2011-07-05
• Fleur-de-___ — 2011-04-28
• Lily, in Lille — 2010-12-24
• Fleur-de-___ — 2009-11-05
• French/Belgian border river — 2009-09-25
• City in Arthur C. Clarke's "The City and the Stars" — 2009-03-21
• French-Belgian border river — 2008-07-06
• Flower of Pâques — 2008-03-22
• French flower — 2007-04-25
• River at Ghent — 2006-02-05
• Fleur-de-___ — 2004-10-13
• River at Ghent — 2004-04-30
• Fleur-de-___ — 2003-10-08
• Fleur-de-___ — 2003-05-25
• Fleur-de-___ — 2002-12-27
• River past Armentières — 2001-08-24
• Fleur-de-___ — 1999-07-06
• Fleur-de-___ — 1999-06-06
• French border river — 1998-10-30
• Fleur-de-___ — 1997-12-31
• River at Ghent — 1997-12-22
• French-Belgian boundary river — 1997-10-16
• Fleur-de-___ — 1996-07-15
• Fleur-de-_____ — 1995-12-10
• Ghent river — 1995-06-07
• French-Belgian border river — 1994-07-30
• Fleur-de-_____ — 1994-04-04