4

Pb     -0.123205947741982     -0.041051802964672      0.202593906301979
Pb      1.565041288724572      1.208659435777255      0.222770837519064
Pb      1.539868552583854      0.393591510488740      1.695819204081890
Pb      0.146850091681325      1.761665345897144      1.676262330459124