Si 
 1.0000000000000000
     6.7077791348991882   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    6.7077791348991882   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.7077791348991882
 Si 
  12
Selective dynamics
Cartesian
  1.6769447837247968 -0.0000000000000000  3.3538895674495937   T   T   T
  5.0308343511743905 -0.0000000000000000  3.3538895674495937   T   T   T
  3.3538895674495937  1.6769447837247968 -0.0000000000000000   T   T   T
  3.3538895674495937  5.0308343511743905 -0.0000000000000000   T   T   T
 -0.0000000000000000  3.3538895674495937  1.6769447837247971   T   T   T
 -0.0000000000000000  3.3538895674495937  5.0308343511743905   T   T   T
  0.0000000000000000  1.6769447837247968  3.3538895674495937   T   T   T
 -0.0000000000000000  5.0308343511743905  3.3538895674495937   T   T   T
  1.6769447837247968  3.3538895674495937 -0.0000000000000000   T   T   T
  5.0308343511743905  3.3538895674495937 -0.0000000000000000   T   T   T
  3.3538895674495937 -0.0000000000000000  5.0308343511743905   T   T   T
  3.3538895674495937 -0.0000000000000000  1.6769447837247971   T   T   T