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