Data:K11n49/PD Presentation

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