Historical clue formulations

• Develop over time — 2024-07-29
• Develop gradually — 2019-01-01
• Change through time — 2017-03-22
• Change with the times — 2017-01-13
• Change over time — 2016-02-15
• Develop — 2016-02-13
• Develop over time — 2015-06-17
• Not stay the same — 2012-04-08
• Change over time — 2009-12-01
• Come about — 2009-03-21
• Develop gradually — 2008-09-10
• Unfold — 2008-01-27
• Develop — 2000-03-05
• Undergo natural selection — 1999-05-23
• Come about — 1999-02-19
• Develop — 1997-12-06
• Unfold — 1997-06-29
• Develop — 1996-07-23
• Metamorphose — 1993-12-05