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