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