Data:L11n308/PD Presentation

X₆₁₇₂ X_12,3,13,4 X_7,17,8,16 X_9,21,10,20 X_15,9,16,8 X_19,5,20,10 X_13,19,14,18 X_17,11,18,22 X_21,15,22,14 X₂₅₃₆ X_4,11,1,12