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Old English ǣġ (inherited)
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Old English ieġ (inherited)
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Middle English ei (inherited)
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Middle English ey (mention)
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Middle English ei (inherited)
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Proto-Germanic *ajją (inherited)
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Proto-Germanic *awjō (inherited)
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Proto-West Germanic *aij (inherited)
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Proto-West Germanic *auwju (inherited)
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Proto-Indo-European *h₂ōwyóm (inherited)
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Ancient Greek ἄχος (mention)
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Icelandic egg (mention)
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Norwegian Bokmål øy (cognate)
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Norwegian Nynorsk agg (cognate)
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Saterland Frisian Oai (link)