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Old English swon (alter)
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Old English suan (alter)
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Old English suon (alter)
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Old English sweġen (doublet)
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Middle English swan (link)
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Middle English swone (link)
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Proto-Germanic *swanaz (inherited)
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Proto-West Germanic *swan (inherited)
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Old High German swan (cognate)
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Proto-Indo-European *swen- (derived)
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Low German Swaan (cognate)
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Old Norse svanr (cognate)
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Old Saxon swan (cognate)
→
English swan (inherited)
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Middle English swan (inherited)
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Middle English suan (inherited)
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Old Norse svanr (cognate)