Data:L10a67/PD Presentation

X₈₁₉₂ X_2,9,3,10 X_10,3,11,4 X_14,5,15,6 X_18,11,19,12 X_20,16,7,15 X_16,20,17,19 X_12,17,13,18 X₆₇₁₈ X_4,13,5,14