X ( 2 , 10 , 3 , 9 ) X ( 4 , 15 , 5 , 16 ) X ( 6 , 2 , 7 , 1 ) X ( 8 , 19 , 9 , 20 ) X ( 10 , 4 , 11 , 3 ) X ( 12 , 17 , 13 , 18 ) X ( 14 , 5 , 15 , 6 ) X ( 16 , 22 , 17 , 21 ) X ( 18 , 7 , 19 , 8 ) X ( 20 , 11 , 21 , 12 ) X ( 22 , 14 , 1 , 13 ) {\displaystyle X(2,10,3,9)X(4,15,5,16)X(6,2,7,1)X(8,19,9,20)X(10,4,11,3)X(12,17,13,18)X(14,5,15,6)X(16,22,17,21)X(18,7,19,8)X(20,11,21,12)X(22,14,1,13)}
