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WN: 06785541-n
Gordischer Knoten
WN: 06785541-n
Gordischer Knoten
any very difficult problem
WN: 06785541-n
Gordischer Knoten
insoluble in its own terms
like: gordischer Knoten
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Gordischer Knoten Gordischer Knoten any very difficult problem Gordischer Knoten insoluble in its own terms