Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
-ig
←
Proto-Germanic
*-gaz
(inherited)
←
Proto-Indo-European
*-kos
(inherited)
→
Old Saxon
enig
(affix)