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