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" 33."|[b^(2)+c^(2),ab,ac],[ba,c^(2)+a^(...

" 33."|[b^(2)+c^(2),ab,ac],[ba,c^(2)+a^(2),b^(2)],[a,cb,a^(2)+b^(2)]|=4a^(2)b^(2)c^(2)

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