Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ingrian
-os
←
Finnish
-os
(cognate)
←
Proto-Finnic
*-os
(inherited)
→
Ingrian
petos
(suffix)
→
Ingrian
painutos
(suffix)
→
Ingrian
parennos
(suffix)
→
Ingrian
syvennös
(suffix)