Data:K11n68/PD Presentation

X₄₂₅₁ X₈₄₉₃ X_5,15,6,14 X₂₈₃₇ X_18,9,19,10 X_16,11,17,12 X_20,14,21,13 X_15,7,16,6 X_10,17,11,18 X_22,19,1,20 X_12,22,13,21