Data:L10n96/PD Presentation

X₆₁₇₂ X₂₅₃₆ X_13,15,14,20 X_3,11,4,10 X_9,1,10,4 X_7,17,8,16 X_15,5,16,8 X_11,19,12,18 X_19,13,20,12 X_17,9,18,14