Data:10 80/PD Presentation

X₁₄₂₅ X₃₈₄₉ X_5,12,6,13 X_13,18,14,19 X_9,16,10,17 X_17,10,18,11 X_15,20,16,1 X_19,14,20,15 X_11,6,12,7 X₇₂₈₃