Si 
 1.0000000000000000
     4.2612488336444105    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.2612488336444105   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.2612488336444105
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.1306244168222062  2.1306244168222062   T   T   T
  2.1306244168222062 -0.0000000000000000  2.1306244168222062   T   T   T
  2.1306244168222062  2.1306244168222062 -0.0000000000000000   T   T   T