Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Russian
куды
←
Belarusian
куды́
(cognate)
←
Czech
kudy
(cognate)
←
Polish
kędy
(cognate)
←
Ukrainian
куди́
(cognate)