Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
ieu
←
Latin
ego
(inherited)
←
Old Occitan
eu
(inherited)
→
French
je
(cognate)
→
Sardinian
eo
(cognate)