Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old English efen-
Proto-Germanic *ebnaz (inherited)

English even- (inherited)
Old English efen (link)
Old English efenwyrcung (prefix)
Old English efensecgan (affix)
Old English efencempa (affix)
Old English efeneardian (affix)
Old English efenhleta (affix)
Old English efenmære (affix)
Old English efenwerod (affix)
Old English efenwiht (affix)
Old English efenwiht (affix)