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