Si 
 1.0000000000000000
     6.8337306628429166    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.8337306628429166    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.8337306628429166
 Si 
  12
Selective dynamics
Cartesian
  1.7084326657107292  0.0000000000000000  3.4168653314214583   T   T   T
  5.1252979971321881  0.0000000000000000  3.4168653314214583   T   T   T
  3.4168653314214583  1.7084326657107292  0.0000000000000000   T   T   T
  3.4168653314214583  5.1252979971321881  0.0000000000000000   T   T   T
  0.0000000000000000  3.4168653314214583  1.7084326657107294   T   T   T
  0.0000000000000000  3.4168653314214583  5.1252979971321881   T   T   T
  0.0000000000000000  1.7084326657107292  3.4168653314214583   T   T   T
  0.0000000000000000  5.1252979971321881  3.4168653314214583   T   T   T
  1.7084326657107292  3.4168653314214583  0.0000000000000000   T   T   T
  5.1252979971321881  3.4168653314214583  0.0000000000000000   T   T   T
  3.4168653314214583  0.0000000000000000  5.1252979971321881   T   T   T
  3.4168653314214583  0.0000000000000000  1.7084326657107294   T   T   T