Data:9 16/PD Presentation

X₄₂₅₁ X_12,4,13,3 X_16,6,17,5 X_18,8,1,7 X_6,18,7,17 X_10,16,11,15 X_14,10,15,9 X_8,14,9,13 X_2,12,3,11