Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Proto-Slavic *udъ

→ Bulgarian уд (inherited)
→ Czech úd (inherited)
→ Old East Slavic оудъ (inherited(orv/cu))
→ Russian уд (inherited)
→ Serbo-Croatian ud (inherited)
→ Serbo-Croatian уд (inherited)
→ Slovene ud (inherited)
→ Old Czech úd (inherited)