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