Si 
 1.0000000000000000
     6.7229466806344522    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.7229466806344522    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.7229466806344522
 Si 
  12
Selective dynamics
Cartesian
  1.6807366701586131  0.0000000000000000  3.3614733403172261   T   T   T
  5.0422100104758396  0.0000000000000000  3.3614733403172261   T   T   T
  3.3614733403172261  1.6807366701586131  0.0000000000000000   T   T   T
  3.3614733403172261  5.0422100104758396  0.0000000000000000   T   T   T
  0.0000000000000000  3.3614733403172261  1.6807366701586133   T   T   T
  0.0000000000000000  3.3614733403172261  5.0422100104758396   T   T   T
  0.0000000000000000  1.6807366701586131  3.3614733403172261   T   T   T
  0.0000000000000000  5.0422100104758396  3.3614733403172261   T   T   T
  1.6807366701586131  3.3614733403172261  0.0000000000000000   T   T   T
  5.0422100104758396  3.3614733403172261  0.0000000000000000   T   T   T
  3.3614733403172261  0.0000000000000000  5.0422100104758396   T   T   T
  3.3614733403172261  0.0000000000000000  1.6807366701586133   T   T   T