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{{-1,-1,-1,1},{0,0,1,1},{0,1,0,1},{1,0,0,1}}*{{e^(4t),0,0,0},{0,e^(4t),0,0},{0,0,e^(4t),0},{0,0,0,0}}*(1/4*{{-1,-1,-1,3},{-1,-1,3,-1},{-1,3,-1,-1},{1,1,1,1}})
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