Si 
 1.0000000000000000
     6.6551062630031019    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6551062630031019    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6551062630031019
 Si 
  12
Selective dynamics
Cartesian
  1.6637765657507757  0.0000000000000000  3.3275531315015514   T   T   T
  4.9913296972523264  0.0000000000000000  3.3275531315015514   T   T   T
  3.3275531315015514  1.6637765657507757  0.0000000000000000   T   T   T
  3.3275531315015514  4.9913296972523264  0.0000000000000000   T   T   T
  0.0000000000000000  3.3275531315015514  1.6637765657507759   T   T   T
  0.0000000000000000  3.3275531315015514  4.9913296972523264   T   T   T
  0.0000000000000000  1.6637765657507757  3.3275531315015514   T   T   T
  0.0000000000000000  4.9913296972523264  3.3275531315015514   T   T   T
  1.6637765657507757  3.3275531315015514  0.0000000000000000   T   T   T
  4.9913296972523264  3.3275531315015514  0.0000000000000000   T   T   T
  3.3275531315015514  0.0000000000000000  4.9913296972523264   T   T   T
  3.3275531315015514  0.0000000000000000  1.6637765657507759   T   T   T