Data:10 77/PD Presentation

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