4

As      0.142831062895584     -0.231451029900082      0.268384410105988
As      1.782184141521387      1.329257891078059      0.138750331394761
As      1.345004918299547     -0.237332464381809      1.724913540752788
As     -0.034539825550383      1.376751245474296      1.536077612290867