Data:L11n91/PD Presentation

X₆₁₇₂ X_12,4,13,3 X_7,16,8,17 X_11,20,12,21 X_17,22,18,5 X_21,18,22,19 X_19,10,20,11 X_9,14,10,15 X_15,8,16,9 X₂₅₃₆ X_4,14,1,13