Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Westrobothnian
dy
←
Proto-Germanic
*hwī
(derived)
←
Proto-Germanic
*sa
(mention)
←
Westrobothnian
tykken
(mention)
←
Old Norse
því
(inherited)
→
Westrobothnian
fȯr
(mention)
→
Westrobothnian
tykken
(mention)