5
5

1 1   1 1   1 1   1 1   1 1 
1 0   0 0   0 0   0 1   1 1 

1 0   0 0   0 0   * *   1 1 
0 0   0 1   1 0   * *   0 0 

* *   0 1   * *   1 0   0 0 
* *   0 0   * *   0 0   0 0 

* *   0 0   0 1   * *   0 0 
* *   1 1   1 1   * *   1 1 

0 1   1 1   1 1   1 1   1 1 
1 1   1 0   0 0   0 1   1 1