Data:10 9/PD Presentation

X₆₂₇₁ X_16,8,17,7 X_12,3,13,4 X_2,15,3,16 X_14,5,15,6 X_4,13,5,14 X_18,10,19,9 X_20,12,1,11 X_8,18,9,17 X_10,20,11,19