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