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