Si 
 1.0000000000000000
     6.6574338506301780   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.6574338506301780   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.6574338506301780
 Si 
  12
Selective dynamics
Cartesian
  1.6643584626575443 -0.0000000000000000  3.3287169253150886   T   T   T
  4.9930753879726337 -0.0000000000000000  3.3287169253150886   T   T   T
  3.3287169253150886  1.6643584626575443 -0.0000000000000000   T   T   T
  3.3287169253150886  4.9930753879726337 -0.0000000000000000   T   T   T
 -0.0000000000000000  3.3287169253150886  1.6643584626575445   T   T   T
 -0.0000000000000000  3.3287169253150886  4.9930753879726337   T   T   T
 -0.0000000000000000  1.6643584626575443  3.3287169253150886   T   T   T
 -0.0000000000000000  4.9930753879726337  3.3287169253150886   T   T   T
  1.6643584626575443  3.3287169253150886 -0.0000000000000000   T   T   T
  4.9930753879726337  3.3287169253150886 -0.0000000000000000   T   T   T
  3.3287169253150886 -0.0000000000000000  4.9930753879726337   T   T   T
  3.3287169253150886 -0.0000000000000000  1.6643584626575445   T   T   T