Data:9 30/PD Presentation

X₄₂₅₁ X_10,6,11,5 X₈₃₉₄ X_2,9,3,10 X_14,8,15,7 X_18,15,1,16 X_16,11,17,12 X_12,17,13,18 X_6,14,7,13