Sn 
 1.0000000000000000
     3.9064275269678719   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    3.9064275269678710   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.3972108181508998
 Sn 
   2
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  1.9532137634839359  1.9532137634839355  1.6986054090754497   T   T   T