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