Data:L11n45/PD Presentation

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