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