Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Finnish kaksikko
Estonian kaksik (cognate)
Finnish kaksi (suffix)
Finnish ikko (suffix)
Proto-Finnic *kakcikko (inherited)

Estonian kaksik (cognate)
Finnish kanoottikaksikko (compound)
Finnish kanadalaiskaksikko (compound)
Finnish tähtikaksikko (compound)
Finnish kajakkikaksikko (affix)
Finnish voimakaksikko (affix)