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

→ Belarusian хто (inherited)
→ Czech kdo (inherited)
→ Kashubian chto (inherited)
→ Old Church Slavonic къто (inherited)
→ Lower Sorbian chto (inherited)
→ Lower Sorbian kenž (mention)
→ Polish kto (inherited)
→ Polabian kåtü (inherited)
→ Russian кто (inherited)
→ Russian каждый (mention)
→ Rusyn хто (inherited)
→ Serbo-Croatian ко (inherited)
→ Serbo-Croatian ko (inherited)
→ Serbo-Croatian kdo (inherited)
→ Serbo-Croatian tko (inherited)
→ Serbo-Croatian nihče (mention)
→ Serbo-Croatian тко (inherited)
→ Serbo-Croatian gdo (inherited)
→ Serbo-Croatian nišče (mention)
→ Slovak kto (inherited)
→ Slovene kdo (inherited)
→ Slovene nihče (mention)
→ Slovene kdor (derived)
→ Silesian fto (inherited)
→ Ukrainian хто (inherited)