Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
ag
→
Breton
ha
(mention)
→
Welsh
a
(cognate)
→
Welsh
â
(mention)
→
Welsh
â
(link)
→
Welsh
â
(mention)
→
Welsh
â
(link)
→
Cornish
ha
(mention)