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