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