Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latvian ar
Ancient Greek ἄρα (cognate)
Proto-Indo-European *h₂er- (derived)
Lithuanian ar (cognate)

Lithuanian ar (cognate)
Latgalian ar (cognate)
Latvian ir (cognate)
Latvian arī (mention)
Latvian arvien (compound)
Latvian arlabvakar (mention)
Latvian arlabunakti (mention)