Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Czech
ruka
←
Proto-Balto-Slavic
*ránkāˀ
(inherited)
←
Proto-Slavic
*rǫka
(inherited)
→
Czech
ruka
(inherited)