Data:10 10/PD Presentation

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