Data:L11n453/PD Presentation

X₆₁₇₂ X_5,12,6,13 X₃₈₄₉ X_15,2,16,3 X_16,7,17,8 X_19,22,20,15 X_21,14,22,11 X_13,20,14,21 X_9,18,10,19 X_11,10,12,5 X_4,17,1,18