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