Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
umbe
→
West Frisian
om
(inherited)
→
Old Norse
um
(cognate)
→
Saterland Frisian
ume
(inherited)
→
Saterland Frisian
uum
(inherited)