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