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