Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gwahaniaethu
←
Welsh
gwahaniaeth
(affix)
←
Welsh
-u
(affix)
→
Welsh
gwahaniaethiad
(affix)