Data:L10n74/PD Presentation

X₆₁₇₂ X_5,14,6,15 X₃₈₄₉ X_15,2,16,3 X_16,7,17,8 X_9,18,10,19 X_4,17,1,18 X_19,12,20,5 X_11,20,12,13 X_13,10,14,11