Data:L10a4/PD Presentation

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