Si 
 1.0000000000000000
     4.2803634017730499   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    4.2803634017730499   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.2803634017730499
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.1401817008865258  2.1401817008865258   T   T   T
  2.1401817008865258 -0.0000000000000000  2.1401817008865258   T   T   T
  2.1401817008865258  2.1401817008865258 -0.0000000000000000   T   T   T