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{{1/sqrt(3),-1/sqrt(2),-1/sqrt(2)},{1/sqrt(3),1/sqrt(2),0},{1/sqrt(3),0,1/sqrt(2)}}.{{5,0,0},{0,-1,0},{0,0,-1}}.{{1/sqrt(3),1/sqrt(3),1/sqrt(3)},{-1/sqrt(2),1/sqrt(2),0},{-1/sqrt(2),0,1/sqrt(2)}}
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