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