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