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