[1,1,-1,-4,0,1,0,0,1,-1,0,-4,0,0,1,0,0,0,0,1,-1,0,
0,-4,0,0,0,1,0,0,0,0,0,0,1,-1,0,0,0,-4,0,0,0,0,1,
0,0,0,0,0,0,0,0,1,-1,0,0,0,0,-4,0,0,0,0,0,1,0,0,0,
0,0,0,0,0,0,0,1,-1,0,0,0,0,0,-4,0,0,0,0,0,0,1,0,0,
0,0,0,0,0,0,0,0,0,0,1,-1,0,0,0,0,0,0,-4,0,0,0,0,0,
0,0,1]
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