Historical clue formulations

• Occupied — 2023-03-01
• Occupied — 2022-07-07
• Occupied, as a lavatory — 2022-06-27
• Occupied — 2021-01-11
• Busy, as a restroom — 2020-08-24
• Unavailable, say — 2020-04-17
• Busy — 2019-08-21
• Occupied — 2018-10-04
• Occupied — 2018-03-25
• Employed — 2016-11-20
• Occupied, as a lav — 2016-08-17
• Occupied — 2016-01-02
• Busy — 2015-02-26
• Occupied, as a restroom — 2014-08-25
• Not free — 2014-05-09
• Occupied, as a restroom — 2014-04-07
• Occupied, as a bathroom — 2013-11-04
• Lavatory sign — 2013-08-14
• Not idle — 2013-08-06
• Not free — 2011-02-19
• Lavatory door sign — 2010-11-30
• Like a locked lavatory — 2010-10-31
• Occupied — 2010-07-22
• Occupied, as a lavatory — 2010-06-14
• Sign on a locked lavatory — 2010-05-11
• Busy — 2009-04-28
• Occupied — 2008-09-21
• Locked, as a lavatory — 2008-06-21
• Operating — 2006-06-10
• Busy — 2006-05-28
• Occupied, as a restroom — 2006-05-01
• Occupied, as a lavatory — 2006-03-20
• Operating — 2006-02-26
• Employed — 2006-01-17
• Lavatory sign — 2003-05-27
• Operating — 2003-03-07
• Occupied — 2002-11-27
• Occupied — 2002-10-31
• Occupied — 2002-08-06
• Rest room sign — 2001-08-28
• Occupied — 2001-08-05
• Loo message — 2001-07-27
• Occupied — 2001-04-18
• Taken — 2000-11-12
• Lavatory sign — 2000-10-03
• "Ocupado" — 2000-07-12
• Busy — 1999-10-03
• Operating — 1999-08-13
• Occupied — 1999-04-25
• Occupied — 1998-11-16