4

Pb      0.190355278416773      0.166032484802529     -0.055995166321446
Pb      1.685857383166637      1.378718909394723      0.040290943691768
Pb      1.735246977559366      0.250946273211964      1.304656382670573
Pb      0.063365168559866      1.779087441861367      1.591951817170028