Data:L10n34/PD Presentation

X₆₁₇₂ X_12,4,13,3 X_16,8,17,7 X_17,20,18,5 X_11,19,12,18 X_19,11,20,10 X_14,10,15,9 X_8,16,9,15 X₂₅₃₆ X_4,14,1,13