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