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