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