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Old English earun (inherited)
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Old English earon (mention)
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Old English sind (cognate)
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Old English bēoþ (mention)
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Old English eart (cognate)
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Old English ār (inherited)
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Middle English aren (inherited)
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Middle English are (inherited)
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Middle English ore (mention)
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Middle English ōr (mention)
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Proto-Germanic *arun (inherited)
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Proto-Germanic *aizō (inherited)
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Proto-Germanic *ais- (mention)
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Proto-West Germanic *aiʀu (inherited)
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Proto-Indo-European *h₁ésti (inherited)
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Icelandic eru (cognate)
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Old Norse eru (cognate)