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Old English sōcn (inherited)
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Old English sacu (cognate)
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Old English sēcan (mention)
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Middle English sookne (inherited)
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Middle English socne (mention)
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Proto-Germanic *sōkniz (inherited)
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Proto-Indo-European *seh₂g- (root)
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Proto-Indo-European *sekʷ- (derived)
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Norwegian sokn (cognate)