Data:L10n107/PD Presentation

X₆₁₇₂ X_5,12,6,13 X₈₄₉₃ X_2,16,3,15 X_16,7,17,8 X_9,11,10,14 X_13,15,14,20 X_19,5,20,10 X_11,18,12,19 X_4,17,1,18