Si 
 1.0000000000000000
     3.8974825725745865    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    3.8974825725745865   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.8974825725745865
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  1.9487412862872930  1.9487412862872930   T   T   T
  1.9487412862872930 -0.0000000000000000  1.9487412862872930   T   T   T
  1.9487412862872930  1.9487412862872930 -0.0000000000000000   T   T   T