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