Historical clue formulations

• Go ___ great length — 2019-03-19
• Go ___ great length — 2018-02-28
• Go ___ great length — 2017-11-09
• Go ___ great length — 2016-08-07
• Go ___ length — 2016-05-06
• Go ___ great length — 2011-09-11
• Go ___ some length — 2009-05-23