Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Swedish
-a
←
Old Norse
-a
(inherited)
→
Swedish
-a
(inherited)
→
Swedish
-a-
(inherited)
→
Swedish
-a-
(inherited)