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Finnish ratas
Proto-Finnic *rat'as (inherited)
Proto-Indo-European *Hret- (derived)
Lithuanian rãtas (cognate)

Finnish siipiratas (compound)
Finnish hammasratas (affix)
Finnish rataseläin (affix)
Finnish teiliratas (affix)
Finnish rattaisto (affix)
Finnish rataspakka (affix)
Finnish ratasnivel (affix)
Finnish ratasmylly (affix)
Finnish vesiratas (affix)
Finnish ketjuratas (affix)
Finnish rataslukko (affix)
Finnish myllynratas (affix)