Historical clue formulations

• Farming prefix — 2024-08-15
• Farm-related prefix — 2023-08-27
• Farming prefix — 2022-04-06
• Prefix with industry — 2019-04-07
• Soil-related prefix — 2017-02-20
• Prefix with business — 2016-10-13
• Prefix with ecology or chemical — 2016-05-01
• Soil: Prefix — 2015-10-18
• Farm-related prefix — 2015-09-05
• Farming prefix — 2015-06-02
• Prefix with chemical — 2015-01-17
• Farming: Prefix — 2014-01-21
• Farming: Prefix — 2013-05-06
• Farming-related: Prefix — 2013-02-11
• Farming prefix — 2012-07-30
• Farming: Prefix — 2012-03-05
• Prefix with business — 2012-02-05
• Soil: Prefix — 2011-05-15
• Soil: Prefix — 2010-06-03
• Prefix with biology — 2010-02-20
• Soil: Prefix — 2009-10-13
• Farming prefix — 2008-12-24
• Prefix with industry — 2008-11-19
• Farming prefix — 2007-03-04
• Soil: Prefix — 2005-12-14
• Prefix with industry — 2005-07-22
• Prefix with industry — 2005-02-24
• Prefix with industry — 2003-11-29
• Prefix with biology — 2002-06-20
• Farm prefix — 2001-01-19
• Soil: Prefix — 2000-06-12
• Soil: Prefix — 1996-09-07
• Field: Prefix — 1995-03-18
• Soil combiner — 1994-05-13
• Earthy prefix — 1994-04-15
• Farming prefix — 1994-01-27