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