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