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