Data:L11n23/PD Presentation

X₆₁₇₂ X_16,7,17,8 X_17,1,18,4 X_9,21,10,20 X₃₈₄₉ X_21,18,22,19 X_11,14,12,15 X_5,13,6,12 X_13,5,14,22 X_19,11,20,10 X_2,16,3,15