Data:L11a401/PD Presentation

X₆₁₇₂ X_18,12,19,11 X₈₄₉₃ X_2,16,3,15 X_16,7,17,8 X_22,9,11,10 X_4,17,1,18 X_10,19,5,20 X_12,6,13,5 X_14,21,15,22 X_20,13,21,14