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