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