Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ido
ke
←
Esperanto
ke
(derived)
←
Spanish
que
(derived)
←
French
que
(derived)
←
Italian
che
(derived)
←
Portuguese
que
(derived)