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