Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Church Slavonic
студеньць
←
Proto-Slavic
*studenьcь
(inherited)
←
Proto-Slavic
*studenъ
(mention)
←
Proto-Slavic
*-ьcь
(mention)
←
Proto-Slavic
*studъ
(mention)