Historical clue formulations

• Bantu language with click consonants — 2022-09-21
• Nelson Mandela's mother tongue — 2014-05-16
• Transkei native — 2011-06-04
• Zulu relative — 2009-07-11
• Mandela's native tongue — 2008-03-02
• South African native — 2007-05-07
• Nelson Mandela's native tongue — 2006-03-16
• Mandela's native tongue — 2004-12-22