Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Lithuanian aštuoni
Old Church Slavonic осмь (cognate)
Proto-Balto-Slavic *aśtō- (derived)
Proto-Indo-European *oḱtṓw (derived)
Latin octō (cognate)
Latvian astoņi (cognate)
Sanskrit अष्ट (cognate)

Lithuanian aštuonetas (link)
Lithuanian aštuoniasdešimt (compound)
Latgalian ostoni (cognate)