Historical clue formulations

• Bull: Prefix — 2018-08-21
• Bull: Prefix — 2011-11-18
• Bull: Prefix — 2008-11-30
• Bull: Prefix — 2004-04-04
• Bull: Prefix — 2000-10-29
• Bullish opening — 2000-02-26
• Bull's head? — 1999-11-28
• Bull: Prefix — 1995-03-12