30
24 17 20 29 25 21 27 23 26 30 18 19 22 16 28 
23 29 27 17 19 21 24 30 20 28 18 16 26 25 22 
26 27 18 17 23 21 28 22 24 20 25 29 30 19 16 
28 18 21 16 25 20 24 27 22 29 26 23 30 19 17 
28 30 29 24 25 20 26 19 27 23 22 17 18 21 16 
28 20 30 26 17 24 18 16 22 21 29 25 27 19 23 
29 17 18 26 27 28 22 25 24 30 20 19 21 16 23 
26 17 23 20 22 18 28 29 21 27 16 30 24 19 25 
16 26 20 22 23 29 25 18 17 28 19 30 24 21 27 
26 27 30 16 17 29 21 23 24 19 20 18 22 28 25 
30 23 28 25 18 17 22 27 21 29 20 19 24 26 16 
21 22 29 28 27 25 23 16 30 26 17 19 20 24 18 
26 27 28 22 21 16 25 20 17 18 24 23 19 29 30 
24 28 17 18 25 27 30 22 26 19 16 29 20 23 21 
16 25 19 29 17 30 27 21 26 20 24 23 18 28 22 
1 4 2 3 14 15 10 7 6 11 8 12 13 9 5 
2 15 7 14 8 6 4 12 5 9 1 11 10 13 3 
15 9 8 3 6 2 4 5 11 10 14 13 1 12 7 
1 2 15 10 12 4 3 6 5 9 7 8 11 13 14 
10 12 11 5 3 1 4 7 14 13 9 15 8 6 2 
9 6 2 15 1 5 3 8 12 13 14 11 7 4 10 
14 3 6 10 8 15 9 4 2 13 12 1 7 11 5 
5 2 12 13 14 3 11 15 1 10 9 4 7 8 6 
7 13 3 10 12 4 15 11 5 6 9 2 8 1 14 
8 1 7 15 11 14 2 6 4 3 13 9 5 10 12 
9 1 11 7 6 8 2 15 4 3 14 5 10 12 13 
4 10 1 13 2 5 11 12 6 3 7 14 8 9 15 
2 13 3 6 8 4 5 11 14 9 12 10 1 15 7 
6 4 11 3 7 1 8 13 14 15 9 5 2 10 12 
8 15 2 1 3 4 5 11 7 9 14 12 6 13 10 
forbidden 1 16
forbidden 1 20
forbidden 1 22
forbidden 1 24
forbidden 1 30
forbidden 2 19
forbidden 2 21
forbidden 2 23
forbidden 2 27
forbidden 2 29
forbidden 3 16
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forbidden 3 19
forbidden 3 20
forbidden 3 22
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forbidden 3 27
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forbidden 15 28