Data:10 73/PD Presentation

X₄₂₅₁ X_10,6,11,5 X₈₃₉₄ X_2,9,3,10 X_16,14,17,13 X_14,7,15,8 X_6,15,7,16 X_20,17,1,18 X_18,11,19,12 X_12,19,13,20