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

→ Kashubian chtëren (inherited)
→ Lower Sorbian kótary (inherited)
→ Upper Sorbian kotryž (inherited)
→ Polish który (inherited)
→ Russian который (inherited)
→ Serbo-Croatian teri (inherited)
→ Serbo-Croatian kteri (inherited)
→ Serbo-Croatian kateri (inherited)
→ Slovak ktorý (inherited)
→ Ukrainian котрий (inherited)