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5
2
9
3
1
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5
1
8
4
6
3
1
4
4
2
7
2
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3
4
1
4
2
2
6
4
5
1
1
8
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6
6
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4
5
1
8
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4
1
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4
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9
3
1
2
4
7
4
2
2
1
8
5
6
6
4
5
8
1
1
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6
7
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