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