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Old English byrden (inherited)
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Old English byrþen (mention)
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Middle English burden (inherited)
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Middle English birden (mention)
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Proto-Germanic *burþį̄ (inherited)
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Proto-West Germanic *burþini (derived)
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Proto-West Germanic *burþī (mention)
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Proto-Indo-European *bʰer- (root)
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Proto-Indo-European *bʰer- (derived)
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Norwegian Nynorsk bør (cognate)
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Norwegian Nynorsk bør (link)