Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Dutch
*rū
→
Dutch
ruig
(mention)
→
Dutch
ruig
(mention)
→
Dutch
ruw
(mention)
→
Dutch
ruw
(mention)