X ( 2 , 18 , 3 , 17 ) X ( 3 , 33 , 4 , 32 ) X ( 6 , 22 , 7 , 21 ) X ( 7 , 37 , 8 , 36 ) X ( 10 , 26 , 11 , 25 ) X ( 11 , 41 , 12 , 40 ) X ( 14 , 30 , 15 , 29 ) X ( 15 , 1 , 16 , 44 ) X ( 18 , 34 , 19 , 33 ) X ( 19 , 5 , 20 , 4 ) X ( 22 , 38 , 23 , 37 ) X ( 23 , 9 , 24 , 8 ) X ( 26 , 42 , 27 , 41 ) X ( 27 , 13 , 28 , 12 ) X ( 30 , 2 , 31 , 1 ) X ( 31 , 17 , 32 , 16 ) X ( 34 , 6 , 35 , 5 ) X ( 35 , 21 , 36 , 20 ) X ( 38 , 10 , 39 , 9 ) X ( 39 , 25 , 40 , 24 ) X ( 42 , 14 , 43 , 13 ) X ( 43 , 29 , 44 , 28 ) {\displaystyle X(2,18,3,17)X(3,33,4,32)X(6,22,7,21)X(7,37,8,36)X(10,26,11,25)X(11,41,12,40)X(14,30,15,29)X(15,1,16,44)X(18,34,19,33)X(19,5,20,4)X(22,38,23,37)X(23,9,24,8)X(26,42,27,41)X(27,13,28,12)X(30,2,31,1)X(31,17,32,16)X(34,6,35,5)X(35,21,36,20)X(38,10,39,9)X(39,25,40,24)X(42,14,43,13)X(43,29,44,28)}
