Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Lithuanian
kietas
←
Latvian
ciets
(cognate)
→
Latgalian
cīši
(cognate)
→
Latvian
ciets
(cognate)