Data:10 20/PD Presentation

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