X ( 2 , 10 , 3 , 9 ) X ( 4 , 5 , 1 , 6 ) X ( 6 , 1 , 7 , 2 ) X ( 8 , 4 , 9 , 3 ) X ( 10 , 7 , 5 , 8 ) {\displaystyle X(2,10,3,9)X(4,5,1,6)X(6,1,7,2)X(8,4,9,3)X(10,7,5,8)}
