Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Bulgarian
беся
←
Bulgarian
обе́ся
(cognate)
←
Bulgarian
об-
(prefix)
←
Bulgarian
веся
(prefix)
←
Bulgarian
о-
(prefix)
←
Bulgarian
беся
(prefix)
→
Bulgarian
беся
(prefix)