Historical clue formulations

• Kind of acting — 2018-04-06
• Kind of acting — 2017-07-09
• Process — 2012-09-14
• Manner — 2011-03-13
• ___ acting — 2010-06-24
• Kind of acting — 2006-08-20
• ___ to one's madness — 1999-06-21
• Modus operandi — 1998-05-17