Historical clue formulations

• Start of the Arabic alphabet — 2020-06-30
• First letter of the Arabic alphabet — 2020-06-21
• Arabic leader — 2020-03-21
• Arabic leader? — 2018-04-19
• A, in Arabic — 2016-02-15
• Arabic leader? — 2015-04-10
• First Arabic letter — 2014-04-07
• A, in Arabic — 2009-10-26
• A first for Arabia? — 2008-01-09
• Ba preceder — 2007-12-14
• Arab leader? — 2006-03-07
• Letter written as a straight vertical line — 2006-02-09
• Mideast leader? — 2005-12-23
• Letter before ba — 2003-07-06
• It comes before ba — 1998-02-07
• Arabic leader — 1998-01-15
• Arabic letter — 1997-01-05
• Arabic "A" — 1995-10-19