6 21
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1 2 1.1028864046933173
1 3 0.0
1 4 0.0
1 5 0.0
1 6 0.0
2 2 0.0
2 3 -0.10681145478134337
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3 4 0.19700367092286222
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4 4 0.0
4 5 0.19325387942386502
4 6 0.0
5 5 0.0
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6 6 0.0