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