Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Breton
dont
←
Breton
monet
(mention)
←
Proto-Celtic
*ageti
(mention)
←
Welsh
dyfod
(cognate)
←
Welsh
dod
(mention)
←
Proto-Indo-European
*pelh₂-
(mention)
←
Old Breton
diminet
(inherited)
←
Old Breton
di
(cognate)
←
Old Breton
do
(mention)
←
Old Breton
(mention)
←
Old Irish
do·aig
(cognate)
←
Middle Breton
donet
(inherited)