Historical clue formulations

• Gracias : Spanish :: ___ : German — 2018-04-15
• "Thanks," in Deutschland — 2016-05-02
• French : merci :: German : ___ — 2014-04-06
• Comment before "Bitte schön" — 2013-10-20
• "___ schön" ("Thank you very much": Ger.) — 2013-03-11
• Comment preceding "Gern geschehen" — 2011-07-21
• Hamburger's acknowledgment — 2009-11-06
• Word to which a common reply is "Bitteschön" — 2008-06-01
• German word of appreciation — 2007-01-15
• … in German — 2006-09-21
• German expression of appreciation — 2006-03-06
• Merci across the river — 1999-07-09
• Planck's "thanks" — 1999-01-27
• Relative of "Merci" — 1998-02-28
• "Thanks, Gerhard" — 1997-07-14
• "___ schon" — 1996-08-25
• Thanks, in Thuringen — 1994-08-02