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