Data:9 29/PD Presentation

X₆₂₇₁ X_16,11,17,12 X_10,4,11,3 X_2,15,3,16 X_14,5,15,6 X_18,8,1,7 X_4,10,5,9 X_12,17,13,18 X_8,13,9,14