Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
beg
←
Proto-Celtic
*bikkos
(inherited)
←
Old Irish
bec
(inherited)
→
Irish
beag
(cognate)
→
Scottish Gaelic
beag
(cognate)
→
Manx
dooin
(link)
→
Manx
beggan
(affix)