Data:L10a127/PD Presentation

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