Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
keiltyn
→
Manx
so-cheiltyn
(prefix)
→
Manx
neucheiltynagh
(affix)
→
Manx
neucheiltynys
(affix)