Data:L11n142/PD Presentation

X₈₁₉₂ X_18,11,19,12 X_3,10,4,11 X_17,3,18,2 X_12,5,13,6 X₆₇₁₈ X_9,16,10,17 X_20,16,21,15 X_22,14,7,13 X_14,22,15,21 X_4,20,5,19