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