Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ubh
←
Proto-Celtic
*āuyom
(inherited)
←
Proto-Indo-European
*h₂ōwyóm
(inherited)
←
Old Irish
og
(inherited)
→
Irish
ubhthoradh
(affix)
→
Irish
ubhagán
(affix)
→
Irish
uibheagán
(affix)
→
Irish
ubhchruth
(affix)
→
Irish
ubhchruthach
(affix)