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