Si 
 1.0000000000000000
     3.9824063227254487    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    3.9824063227254487   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.9824063227254487
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  1.9912031613627239  1.9912031613627239   T   T   T
  1.9912031613627239 -0.0000000000000000  1.9912031613627239   T   T   T
  1.9912031613627239  1.9912031613627239 -0.0000000000000000   T   T   T