Historical clue formulations

• "___ Wiedersehen!" — 2016-09-18
• "Ariadne ___ Naxos" — 2016-05-20
• "___ Wiedersehen" — 2016-03-17
• "___ Wiedersehen" — 2015-06-30
• "___ Wiedersehen" — 2012-11-15
• Strauss's "Ariadne ___ Naxos" — 2011-07-31
• "___ Ferienreisen" (Strauss polka) — 2011-01-21
• Start of a German goodbye — 2009-09-20
• "___ Wiedersehen" — 2009-09-13
• Start of a German goodbye — 2009-09-06
• "___ Wiedersehen" — 2007-11-27
• "___ Wiedersehen!" — 2007-05-31
• "___ Deutsch, bitte" (German teacher's request) — 2004-10-09
• On, in Osnabrück — 2002-03-22
• ___ Wiedersehen — 2002-03-12
• "___ Wiedersehen" — 2001-12-06
• "___ Wiedersehen" — 2001-03-12
• "___ Wiedersehen" — 2000-08-08
• Strauss's "Ariadne ___ Naxos" — 1996-10-20
• Strauss's "Ariadne _____ Naxos" — 1995-09-16
• "_____ Wiedersehen" — 1994-04-13