Data:L10n109/PD Presentation

X₆₁₇₂ X_5,12,6,13 X₃₈₄₉ X_2,16,3,15 X_16,7,17,8 X_19,11,20,14 X_13,15,14,20 X_9,18,10,19 X_11,10,12,5 X_17,1,18,4