4

Pb      0.164310824750570     -0.185742704050967      0.032777132345812
Pb      1.399719742214522      1.373661359524982      0.218138927456429
Pb      1.044124958522104      0.194102356536350      1.330964971965350
Pb     -0.117988029405912      1.433005925823433      1.220024819735864