Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Gagauz
aaç
←
Proto-Turkic
*āç
(inherited)
←
Proto-Turkic
*ạ̄č
(mention)
←
Proto-Turkic
*agaç
(inherited)