Data:L11n443/PD Presentation

X₆₁₇₂ X₂₅₃₆ X_18,11,19,12 X_3,11,4,10 X_9,1,10,4 X_7,17,8,16 X_15,5,16,8 X_20,14,21,13 X_22,19,15,20 X_12,22,13,21 X_14,17,9,18