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