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