Data:K11n42/PD Presentation

X₄₂₅₁ X₈₄₉₃ X_12,5,13,6 X₂₈₃₇ X_9,18,10,19 X_11,21,12,20 X_6,13,7,14 X_15,10,16,11 X_17,22,18,1 X_19,15,20,14 X_21,16,22,17