Data:L11n172/PD Presentation

X₈₁₉₂ X_3,10,4,11 X_12,7,13,8 X_22,15,7,16 X_14,6,15,5 X_6,14,1,13 X_16,21,17,22 X_9,18,10,19 X_20,11,21,12 X_4,18,5,17 X_19,3,20,2