Data:10 90/PD Presentation

X₆₂₇₁ X₂₈₃₇ X_18,14,19,13 X_14,5,15,6 X_20,12,1,11 X_12,20,13,19 X_8,15,9,16 X_10,4,11,3 X_16,9,17,10 X_4,17,5,18