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