Data:L10a79/PD Presentation

X₈₁₉₂ X_12,3,13,4 X_20,13,7,14 X_14,9,15,10 X_10,19,11,20 X_16,6,17,5 X_18,16,19,15 X₂₇₃₈ X_4,11,5,12 X_6,18,1,17