20
16 18 20 17 13 14 11 19 12 15 
12 11 13 17 18 15 16 19 20 14 
15 11 16 13 12 17 18 14 19 20 
20 16 19 11 14 12 18 13 15 17 
19 16 15 17 13 14 20 12 18 11 
13 19 16 12 14 11 18 17 15 20 
16 12 11 18 14 20 17 19 13 15 
13 19 20 14 16 17 12 11 15 18 
16 18 11 17 19 12 20 13 15 14 
18 20 15 19 17 16 12 14 11 13 
5 2 4 6 9 8 10 3 7 1 
6 10 5 3 2 4 8 9 1 7 
1 9 7 5 10 8 4 2 3 6 
7 9 1 2 8 3 5 6 4 10 
10 3 8 4 7 6 1 2 5 9 
2 8 7 1 5 6 4 3 9 10 
9 6 3 10 1 8 4 2 7 5 
2 1 9 10 7 4 3 6 8 5 
9 7 10 5 1 6 4 8 2 3 
2 3 10 1 6 7 5 8 9 4 
forbidden 1 14
forbidden 1 15
forbidden 1 16
forbidden 1 17
forbidden 2 13
forbidden 2 18
forbidden 2 19
forbidden 2 20
forbidden 3 12
forbidden 3 13
forbidden 3 16
forbidden 3 17
forbidden 3 18
forbidden 3 19
forbidden 3 20
forbidden 4 14
forbidden 4 15
forbidden 4 16
forbidden 4 18
forbidden 4 19
forbidden 4 20
forbidden 5 11
forbidden 5 12
forbidden 5 15
forbidden 5 16
forbidden 5 17
forbidden 5 19
forbidden 5 20
forbidden 6 14
forbidden 6 16
forbidden 6 17
forbidden 6 20
forbidden 7 11
forbidden 7 12
forbidden 7 13
forbidden 7 14
forbidden 7 17
forbidden 8 11
forbidden 8 12
forbidden 8 15
forbidden 8 16
forbidden 8 17
forbidden 8 19
forbidden 9 11
forbidden 9 14
forbidden 9 15
forbidden 9 17
forbidden 9 19
forbidden 9 20
forbidden 10 16
forbidden 10 19