Data:L10a44/PD Presentation

X₆₁₇₂ X_14,3,15,4 X_16,8,17,7 X_18,10,19,9 X_20,12,5,11 X_8,18,9,17 X_10,20,11,19 X_12,16,13,15 X₂₅₃₆ X_4,13,1,14