Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Occitan
arroïnar
←
Spanish
arruinar
(mention)
←
French
ruiner
(mention)
←
Italian
rovinare
(mention)
←
Occitan
a
(confix)
←
Occitan
roïna
(confix)
←
Occitan
ar
(confix)
→
French
ruiner
(cognate)