Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
igračka
←
Czech
hračka
(cognate)
←
Serbo-Croatian
igra
(suffix)
←
Serbo-Croatian
čka
(suffix)
←
Slovene
igrača
(cognate)
→
Czech
hračka
(cognate)