4

Pb      0.030993332900192      0.246926097148338      0.106688421960278
Pb      1.425887622533798      1.212232712200759      0.343604358383127
Al      1.404110580288351     -0.020735539856900      1.522717450228873
Al      0.033209481428651      1.253627144673603      1.545126919130450