0
2
2
0
0
2
2
2
0
0
2
2
2
0
0
0
2
2
0
2
0
0
0
0
2
2
0
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2
0
2
0
1
2
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2
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2
2
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2
2
0
2
2
2
0
2
2
2
2
0
1
2
2
0
0
0
0
2
0
2
2
2
1
2
2
0
0
1
2
0
2
0
1
2
0
2
0
2
0
0
0
0
0
2
2
0
0
2
0
2
0
0
0
2
0
0
2
2
0
1
2
2
2
2
2
2
2
2
0
2
1
2
2
2
2
0
0
0
0
2
20
1
2
0
0
2
1
0
0
2
0
2
2
0
0
0
2
0
0
0
0
0
0
2
2
0
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2
18
2
0
0
8
2
0
2
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2
0
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2
2
0
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2
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0
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2
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2
0
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2
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0
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1
2
0
0
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1
0
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15
1
2
0
2
2
2
2
