4

Pb      0.128630525520526     -0.083033441872036      0.154887825454511
Pb      1.390850375127445      1.084469422354888      0.164310824750570
Pb      1.247263221772466     -0.234595083782860      1.532777132345812
Pb      0.125585356255995      1.099806653912808      1.460976737521101