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