Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
feeagh
←
Manx
feeagh mooar
(link)
←
Manx
feeagh marrey
(link)
←
Manx
cass feeagh
(link)
←
Manx
feeu
(link)
←
Manx
neufeeagh
(link)
←
Old Irish
fiach
(inherited)
←
Old Irish
fíach
(inherited)
→
Manx
neufeeagh
(prefix)
→
Manx
fo-feeagh
(prefix)