Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Finnish
nnainen
→
Finnish
olennainen
(suffix)
→
Finnish
synnynnäinen
(suffix)
→
Finnish
valinnainen
(suffix)
→
Finnish
leivonnainen
(suffix)
→
Finnish
hankinnainen
(suffix)