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