Data:10 30/PD Presentation

X₁₄₂₅ X_5,12,6,13 X_3,11,4,10 X_11,3,12,2 X_9,18,10,19 X_13,20,14,1 X_19,14,20,15 X_17,6,18,7 X_7,16,8,17 X_15,8,16,9