Historical clue formulations

• Letters on a gearshift — 2022-04-04
• Quintet representing the ends of the answers to the five starred clues — 2014-12-31
• Shifting letters — 2011-05-21
• Shifting sequence — 2009-03-27
• Gearshift sequence — 2008-12-10
• Gearshift sequence — 2004-04-20