Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ingrian
opastaja
←
Finnish
opastaja
(cognate)
←
Ingrian
opastaa
(suffix)
←
Ingrian
-ja
(suffix)
→
Ingrian
ittseopastaja
(compound)