Historical clue formulations

• Smartens (up) — 2021-07-31
• Smartens (up) — 2015-09-04
• Gets a clue, with "up" — 2014-10-04
• Smartens (up) — 2009-06-14
• Smartens (up) — 2006-09-06
• Smartens (up) — 2005-06-07
• Becomes aware, with "up" — 2001-08-26