Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
immeeaght
←
Manx
immee
(suffix)
←
Manx
aght
(suffix)
←
Middle Irish
imthecht
(inherited)
←
Old Irish
imthecht
(inherited)
→
Manx
co-immeeaght
(prefix)