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