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