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