Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
éigin
←
Irish
éigean
(mention)
←
Irish
eicínt
(alter)
←
Irish
éicint
(alter)
←
Irish
éigint
(alter)
←
Irish
inteacht
(link)
←
Old Irish
éicin
(inherited)
←
Old Irish
éicen
(mention)
→
Irish
inteacht
(mention)