Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Welsh
pawb
←
Proto-Brythonic
*pọb
(inherited)
←
Proto-Celtic
*kʷākʷos
(inherited)
←
Old Church Slavonic
какъ
(cognate)
←
Proto-Indo-European
*kʷeh₂-kʷo-
(inherited)
←
Lithuanian
kõks
(cognate)
←
Old Welsh
paup
(inherited)
←
Old Irish
cách
(cognate)
→
Welsh
pob
(inherited)
→
Welsh
pawb
(inherited)
→
Old Irish
cách
(cognate)
→
Old Irish
cach
(cognate)