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