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