Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*sik
→
Old High German
sih
(inherited)
→
Low German
sik
(inherited)
→
Dutch
zich
(derived)
→
Saterland Frisian
sik
(inherited)