Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
theirn
←
English
hern
(mention)
←
English
theirs
(mention)
←
Middle English
theiren
(derived)
→
English
theirs
(mention)
→
English
their'n
(mention)