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