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