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