Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
faill
←
Proto-Celtic
*wallos
(inherited)
←
Irish
aill
(mention)
←
Old Irish
fall
(inherited)
→
Irish
failligh
(affix)