Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Polish kopać
Proto-Indo-European *kop- (inherited)
Proto-Slavic *kopati (inherited)

Polish kop (mention)
Polish kopalnia (affix)
Polish koparka (affix)
Polish kopacz (suffix)
Polish Kopel (mention)
Polish przekopać (prefix)
Polish kopanka (affix)
Polish kopyść (mention)
Polish kopidół (compound)
Polish kopocz (affix)
Polish zakopać (affix)
Polish skopać (prefix)
Polish kopalny (suffix)
Polish dokopać (prefix)
Polish okopać (affix)