4

Pb      0.071206722256885     -0.152257079080217      0.220832918651045
Pb      1.059071457548461      1.269651258920682      0.181071097350948
Pb      1.207960984986822      0.408140063807108      1.599952495818845
Pb      0.139918736366135      1.264068286831079      1.752267483309587