Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Bantu *bʊ̀-

→ Northern Sotho bo- (inherited)
→ Sotho bo- (inherited)
→ Swahili u- (inherited)
→ Tswana bo- (inherited)
→ Zulu bu- (inherited)