Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
ou
←
German
ab
(cognate)
←
West Frisian
ôf
(cognate)
←
Proto-Germanic
*ab
(derived)
←
Proto-West Germanic
*ab
(inherited)
←
Old Frisian
of
(inherited)
→
Saterland Frisian
Oufoart
(prefix)
→
Saterland Frisian
Ouhong
(prefix)
→
Saterland Frisian
Ouskeed
(prefix)