Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
fonn
←
Old Irish
bonn
(mention)
→
Irish
fonn
(inherited)
→
Irish
fonn
(inherited)
→
Middle Irish
fonn
(mention)