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