Data:L11n98/PD Presentation

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