Data:10 97/PD Presentation

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