4

Pb      0.293395760243599      0.107994650866015      0.013122571001778
Pb      1.536975360233889      1.388152595085491      0.177277631605842
Pb      1.223809726937481     -0.048555541838684      1.402913059270245
Pb      0.296021904448908      1.694333791685728      1.554091759752255