Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
perpetuo
←
Latin
perpetuus
(suffix)
←
Latin
ō
(suffix)
←
Latin
perpetuē
(alter)
←
Latin
perpetuum
(alter)
←
Latin
perpetuus
(suffix)
←
Latin
ō
(suffix)
←
Latin
perpetuitō
(link)
←
Latin
perpetuus
(mention)