Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Frisian ēn

→ North Frisian een (inherited)
→ North Frisian jen (inherited)
→ North Frisian ån (inherited)
→ North Frisian jaan (mention)
→ North Frisian ian (derived)
→ North Frisian iinj (derived)
→ North Frisian iaan (derived)
→ West Frisian ien (inherited)
→ Old Frisian nen (blend)
→ Saterland Frisian aan (inherited)