Si 
 1.0000000000000000
     4.0055974953084217    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.0055974953084217   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    4.0055974953084217
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.0027987476542108  2.0027987476542108   T   T   T
  2.0027987476542108 -0.0000000000000000  2.0027987476542108   T   T   T
  2.0027987476542108  2.0027987476542108 -0.0000000000000000   T   T   T