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