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