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