Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Bulgarian -то

→ Bulgarian когато (affix)
→ Bulgarian който (affix)
→ Bulgarian нито (affix)
→ Bulgarian където (affix)
→ Bulgarian колкото (affix)
→ Bulgarian дето (affix)
→ Bulgarian чийто (affix)
→ Bulgarian повечето (affix)
→ Russian -то (mention)