Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
ebeulez
←
Breton
ebeul
(suffix)
←
Breton
ez
(suffix)
←
Welsh
eboles
(cognate)
→
Breton
ebeulezed
(suffix)