[[0,0,1,0],[0,-3,0,3],[3,9,0,-18],[1,0,-1,0]]*[[1,-3,0,3],[-2,-6,0,13],[0,-3,1,3],[-1,-4,0,8]]*[[0,0,1,0],[0,-3,0,3],[3,9,0,-18],[1,0,-1,0]]^-1

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