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