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