Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Church Slavonic сѫ

→ Old Church Slavonic сѫсѣдъ (prefix)
→ Old Church Slavonic сѫпрѫгъ (prefix)
→ Old Church Slavonic сѫпьрь (prefix)
→ Old Church Slavonic сѫпротивьникъ (prefix)
→ Old Church Slavonic сѫмьнѣти (prefix)