Data:10 41/PD Presentation

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