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