4

Pb     -0.072262981508758      0.047973266591394      0.159447193794138
Cu      1.759004909162066      1.380084938469760      0.256852970053352
Pb      1.065998921699767      0.127849381183311      1.433722550021904
Cu     -0.011125201444992      1.736666651441380      1.236564754306926