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