Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
hene
←
Old Irish
[[fadéin]], [[féin]]
(inherited)
→
Manx
hene-
(mention)
→
Manx
hene-ghraih
(prefix)
→
Manx
hene-enney
(prefix)
→
Manx
hene-graih
(prefix)