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