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