Data:L10a83/PD Presentation

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