Data:10 85/PD Presentation

X₆₂₇₁ X_16,6,17,5 X_18,11,19,12 X_14,7,15,8 X₈₃₉₄ X_4,9,5,10 X_20,13,1,14 X_10,17,11,18 X_12,19,13,20 X_2,16,3,15