Si 
 1.0000000000000000
     3.8662381475209457   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.8662381475209457    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    3.8662381475209457
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9331190737604727  1.9331190737604727   T   T   T
  1.9331190737604727  0.0000000000000000  1.9331190737604727   T   T   T
  1.9331190737604727  1.9331190737604727  0.0000000000000000   T   T   T