Si 
 1.0000000000000000
     3.8532609506963871    0.0000000000000000    0.0000000000000000
    -0.0000000000000000    3.8532609506963871    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.8532609506963871
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9266304753481933  1.9266304753481933   T   T   T
  1.9266304753481933  0.0000000000000000  1.9266304753481933   T   T   T
  1.9266304753481933  1.9266304753481933  0.0000000000000000   T   T   T