Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
aa
←
Latin
ala
(inherited)
←
Old Portuguese
[[a]] [[a]]
(contraction of)
→
Galician
á
(inherited)
→
Portuguese
á
(inherited)
→
Portuguese
asa
(cognate)