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