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