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

→ Bulgarian дъргам (inherited)
→ Macedonian дрка (derived)
→ Macedonian дрнка (derived)
→ Polish drgać (inherited)
→ Serbo-Croatian drhtati (inherited)
→ Serbo-Croatian drkati (inherited)
→ Serbo-Croatian дркати (inherited)
→ Serbo-Croatian дрхтати (inherited)
→ Slovene drkati (inherited)
→ Silesian dyrgać (inherited)