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