Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
in tan
←
Old Irish
tan
(mention)
←
Old Irish
in tain
(mention)
←
Old Irish
(mention)
→
Middle Irish
in tan
(inherited)