Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Belarusian васямнаццаць
Belarusian восем (compound)
Belarusian на (compound)
Belarusian дзесяць (compound)
Old Church Slavonic осмь на дєсѧтє (cognate)
Russian восемна́дцать (mention)
Ukrainian вісімна́дцять (mention)