const unsigned short back[] = {

6,7,6,7,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

14,15,14,15,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

6,7,6,7,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

2,3,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,

10,11,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,

2,3,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,

10,11,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,

2,3,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,
3,2,3,2,3,2,3,2,

10,11,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,
11,10,11,10,11,10,11,10,

6,6,6,6,6,6,6,6,
6,6,6,6,6,4,5,4,
5,6,6,6,6,6,6,6,
6,6,4,4,5,6,6,6,

6,6,6,6,6,6,6,6,
6,6,6,6,6,12,13,12,
13,6,6,6,6,6,6,6,
6,6,12,12,13,6,6,6,

6,6,6,6,6,6,6,6,
6,6,7,6,7,4,5,4,
5,6,6,6,6,6,6,6,
6,6,4,4,5,6,6,6,

6,6,6,6,6,6,6,6,
6,14,15,14,15,12,13,12,
13,6,6,6,6,6,6,6,
6,6,12,12,13,6,6,6,

6,6,6,6,6,6,6,6,
6,4,5,4,5,4,5,4,
5,4,5,4,5,4,5,4,
5,4,5,4,5,6,6,6,

6,6,6,6,6,6,6,6,
6,12,13,12,13,12,13,12,
13,12,13,12,13,12,13,12,
13,12,13,12,13,6,6,6,

6,6,6,6,6,6,6,6,
6,4,5,6,7,6,7,6,
7,6,6,6,4,5,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,12,13,14,15,14,15,14,
15,6,6,6,12,13,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,4,5,6,7,6,6,6,
6,6,6,6,4,5,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,12,13,14,15,6,6,6,
6,6,6,6,12,13,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,4,5,6,6,6,6,4,
5,4,5,4,5,5,4,5,
4,5,4,5,4,0,1,5,

6,6,6,6,6,6,6,6,
6,12,13,6,6,6,6,12,
13,12,13,12,13,13,12,13,
12,13,12,13,12,8,9,13,

6,6,6,6,6,6,6,6,
6,0,1,6,6,6,6,4,
5,6,6,6,6,6,6,6,
6,4,5,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,8,9,6,6,6,6,12,
13,6,6,6,6,6,6,6,
6,12,13,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,0,1,6,6,6,6,4,
5,6,6,6,6,6,6,6,
6,4,5,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,8,9,6,6,6,6,12,
13,6,6,6,6,6,6,6,
6,12,13,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,4,5,6,6,6,6,4,
5,6,6,6,6,6,6,6,
6,4,5,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,12,13,6,6,6,6,12,
13,6,6,6,6,6,6,6,
6,12,13,6,6,6,6,6,

4,5,5,4,5,4,5,4,
5,4,5,4,5,4,5,4,
5,4,5,4,5,0,1,0,
1,4,5,6,6,6,6,6,

12,13,13,12,13,12,13,12,
13,12,13,12,13,12,13,12,
13,12,13,12,13,8,9,8,
9,12,13,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,
6,6,6,6,6,6,6,6,

};