6,1,15,,3,2,14,,5,7,8,,9,10,12,,4,13,11
3,1,5,,8,2,12,,9,7,11,,4,10,15,,6,13,14
8,1,11,,9,2,15,,4,7,14,,3,10,5,,3,13,12
9,1,14,,4,2,5,,6,7,12,,3,10,11,,8,13,15
4,1,12,,6,2,11,,3,7,15,,8,10,14,,9,13,5