Historical clue formulations

• Signs of treble? — 2026-02-25
• Staff figures — 2024-11-22
• Heads of staff? — 2021-12-01
• Staff openings? — 2017-08-27
• Heads of staffs? — 2003-07-21
• C, F and G — 2002-03-17
• Staff leaders — 2000-04-19
• G, F and C — 1997-04-27
• Staff leaders — 1997-01-19
• Staff leaders — 1994-01-02