Data:L10a52/PD Presentation

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