Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
oik
→
Manx
ard-oik
(affix)
→
Manx
oikoil
(affix)
→
Manx
fo-oik
(prefix)