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