Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
North Frisian
fjuur
←
North Frisian
fjauer
(cognate)
←
North Frisian
fjouer
(cognate)
←
West Frisian
fjouwer
(cognate)
←
Old Frisian
fiūwer
(derived)
→
North Frisian
fjauer
(mention)
→
North Frisian
schtjuur
(mention)