Si 
 1.0000000000000000
     3.8974825725852407   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.8974825725852407    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.8974825725852407
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9487412862926206  1.9487412862926206   T   T   T
  1.9487412862926206  0.0000000000000000  1.9487412862926206   T   T   T
  1.9487412862926206  1.9487412862926206  0.0000000000000000   T   T   T