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