Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
-gar
←
Proto-Celtic
*-[[āk-]][[aro-]]
(inherited)
←
Welsh
-og
(compound)
←
Welsh
-ar
(compound)
←
Welsh
caru
(mention)
→
Welsh
beiddgar
(affix)
→
Welsh
goddefgar
(affix)
→
Welsh
amyneddgar
(affix)
→
Welsh
dioddefgar
(affix)
→
Welsh
cyfeillgar
(affix)
→
Welsh
addolgar
(affix)
→
Welsh
gwrthryfelgar
(affix)
→
Welsh
ymrafaelgar
(affix)
→
Welsh
ymrysongar
(affix)
→
Welsh
ffraegar
(affix)
→
Welsh
cwerylgar
(affix)
→
Welsh
ymladdgar
(affix)
→
Welsh
eiddgar
(affix)
→
Welsh
ymdrechgar
(affix)
→
Welsh
meddylgar
(affix)