Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
biknegan
←
Proto-Indo-European
*ǵneh₃-
(root)
←
Old Saxon
bi
(prefix)
←
Old Saxon
knegan
(prefix)
→
Old Saxon
knaian
(cognate)