Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
hwynt
←
Welsh
hwy
(mention)
←
Irish
iad
(cognate)
←
Old Irish
íat
(cognate)
→
Breton
int
(cognate)
→
Welsh
hwy
(alter)
→
Irish
iad
(mention)