Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Czech
nej-
←
Proto-Slavic
*naj-
(inherited)
←
Proto-Slavic
*na
(link)
←
Proto-Slavic
*i
(link)