Data:L10a64/PD Presentation

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