Si 
 1.0000000000000000
     3.9438272643505448   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.9438272643505448   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.9438272643505448
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9719136321752724  1.9719136321752724   T   T   T
  1.9719136321752724 -0.0000000000000000  1.9719136321752724   T   T   T
  1.9719136321752724  1.9719136321752724 -0.0000000000000000   T   T   T