Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
þoft
→
Old English
þoftscipe
(affix)
→
Old English
geþoftscipe
(affix)
→
Old English
þoftræden
(affix)
→
Old English
geþoftræden
(affix)