Historical clue formulations

• Continue to work on — 2024-12-17
• Don't give up on — 2023-12-17
• Not give up on — 2019-01-30
• *Stick it to — 2016-06-16
• Don't stop — 2002-06-02
• Stick to — 1999-08-08
• Don't stop — 1999-06-25