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