Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Saterland Frisian an
German an (cognate)
West Frisian oan (cognate)
Proto-Germanic *an (inherited)
Proto-West Germanic *an (inherited)
Old Frisian an (inherited)

English on (cognate)
Saterland Frisian ankiekje (prefix)
Saterland Frisian Ankumst (prefix)
Saterland Frisian antou (compound)