Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Hellenic
*hə-
→
Greek
αδελφός
(derived)
→
Greek
αδελφή
(derived)
→
Ancient Greek
ἁ-
(inherited)