Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Czech o
Proto-Indo-European *h₃ebʰi (derived)
Proto-Slavic *o(b) (inherited)

Czech o- (mention)
Czech ob- (mention)
Czech ověřit (prefix)
Czech opracovat (prefix)
Czech opravit (prefix)
Czech otočit (prefix)
Czech opřít (prefix)
Czech opsat (prefix)
Czech okolí (prefix)
Czech ocenit (prefix)
Czech označit (prefix)
Czech opravdu (prefix)
Czech ošetřit (prefix)
Czech ozkoušet (prefix)
Czech obývat (prefix)
Czech ohodnotit (prefix)
Czech ozdobit (prefix)
Czech otaškařit (prefix)
Czech ochutit (prefix)
Czech obalamutit (prefix)
Czech otužit (prefix)
Czech ozim (prefix)