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