Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cecr
→
Welsh
cecru
(affix)
→
Welsh
cecrus
(affix)
→
Welsh
cecren
(affix)
→
Welsh
cecraeth
(affix)