Data:L11n171/PD Presentation

X₈₁₉₂ X_11,21,12,20 X_10,4,11,3 X_2,17,3,18 X_14,5,15,6 X₆₇₁₈ X_16,10,17,9 X_13,19,14,18 X_22,16,7,15 X_19,13,20,12 X_4,22,5,21