Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cobhsaí
←
Middle Irish
cobsaid
(inherited)
←
Old Irish
com-
(affix)
←
Old Irish
fossad
(affix)
→
Irish
aonchobhsaí
(prefix)
→
Irish
cobhsaíocht
(affix)
→
Irish
éagobhsaí
(prefix)