Data:L10a169/PD Presentation

X₆₁₇₂ X_12,6,13,5 X₈₄₉₃ X_2,16,3,15 X_16,7,17,8 X_14,9,11,10 X_20,13,15,14 X_10,19,5,20 X_18,12,19,11 X_4,17,1,18