Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Serbo-Croatian
нека
←
Bulgarian
нека
(cognate)
←
Polish
niech
(cognate)
←
Slovak
nech
(cognate)
←
Proto-Slavic
*nekъ
(inherited)