Historical clue formulations

• Scope — 2025-11-16
• Bounds — 2022-12-25
• Limits — 2022-12-09
• Sphere of influence — 2020-10-02
• Scope — 2020-09-05
• Bounds — 2018-02-16
• Scope — 2016-06-26
• Scope — 2015-01-04
• Rage — 2014-08-23
• Scope — 2014-07-06
• Scope — 2013-10-24
• Circumference — 2013-05-13
• Sphere of influence — 2012-03-03
• Circuit — 2009-09-13
• Circumference — 2007-02-19
• Circuit — 2006-05-25
• Scope — 2001-09-30
• Boundary — 2001-06-20
• Bounds — 1998-11-28
• Circumference — 1998-03-03
• Scope — 1997-05-30
• Circumference — 1997-05-10
• Boundary — 1994-09-12
• Sphere of operation — 1994-07-13