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