Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Phuthi
-eka
←
Proto-Bantu
*-ɪka
(inherited)
→
Phuthi
tfukulleka
(affix)
→
Phuthi
sinyeka
(affix)