Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Old Church Slavonic оумъ
← Proto-Slavic *umъ (inherited)

→ Old Church Slavonic безоумьникъ (affix)
→ Old Church Slavonic оумьнъ (suffix)
→ Old Church Slavonic безоумьнъ (affix)
→ Old Church Slavonic безоумьѥ (affix)
→ Old Church Slavonic разоумъ (prefix)
→ Lithuanian aumuo (cognate)