Historical clue formulations

• Flexible — 2022-01-24
• Yielding — 2020-05-29
• Flexible — 2019-05-31
• Malleable — 2015-03-30
• Flexible — 2013-01-07
• Flexible — 2008-03-31
• Flexible — 2008-03-24
• Flexible — 2006-10-15
• Flexible — 2004-01-19
• Yielding — 1998-01-18
• Easily bent — 1996-01-17
• Flexible — 1995-10-29
• Accommodating — 1994-03-04