4

Ca      0.212192530768357      0.061469892070774      0.129906654314070
Ca      1.282204502380368      1.782781973647627      0.172518766490900
Ca      1.633628589643589     -0.172970586143862      1.337700403972780
Ca      0.048524731554665      1.554734990173494      1.250945130364687