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