Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lower Sorbian
pawk
←
Proto-Indo-European
*h₂enkos
(derived)
←
Proto-Slavic
*paǫkъ
(inherited)
←
Proto-Slavic
*pa-
(mention)
←
Proto-Slavic
*ǫkъ
(mention)