Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
kustumar
←
Esperanto
kutimi
(cognate)
←
Ido
kustumo
(suffix)
←
Ido
ar
(suffix)
→
French
accoutumer
(cognate)