Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
-ait
←
French
-ât
(mention)
←
French
-ît
(mention)
←
French
-ût
(mention)
←
Old French
-oit
(inherited)
←
Latin
-ēbat
(inherited)
←
Latin
-iēbat
(inherited)
→
French
-ais
(link)