Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*laygos
→
Breton
leue
(inherited)
→
Welsh
llo
(inherited)
→
Irish
lao
(inherited)
→
Manx
lheiy
(inherited)