Si 
 1.0000000000000000
     4.3248279699694052   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    4.3248279699694052   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    4.3248279699694052
 Si 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  2.1624139849847039  2.1624139849847039   T   T   T
  2.1624139849847039 -0.0000000000000000  2.1624139849847039   T   T   T
  2.1624139849847039  2.1624139849847039 -0.0000000000000000   T   T   T