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