Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
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onontbeerlijk
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Dutch
on
(prefix)
←
Dutch
ontbeerlijk
(prefix)
→
Dutch
on-
(link)
→
Swedish
oumbärlig
(cognate)