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