Data:T(13,3)/PD Presentation

[math]\displaystyle{ X(1,37,2,36) X(2,20,3,19) X(5,41,6,40) X(6,24,7,23) X(9,45,10,44) X(10,28,11,27) X(13,49,14,48) X(14,32,15,31) X(17,1,18,52) X(18,36,19,35) X(21,5,22,4) X(22,40,23,39) X(25,9,26,8) X(26,44,27,43) X(29,13,30,12) X(30,48,31,47) X(33,17,34,16) X(34,52,35,51) X(37,21,38,20) X(38,4,39,3) X(41,25,42,24) X(42,8,43,7) X(45,29,46,28) X(46,12,47,11) X(49,33,50,32) X(50,16,51,15) }[/math]