Si 
 1.0000000000000000
     6.9685962643449821    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.9685962643449821   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.9685962643449821
 Si 
  12
Selective dynamics
Cartesian
  1.7421490660862455 -0.0000000000000000  3.4842981321724911   T   T   T
  5.2264471982587368 -0.0000000000000000  3.4842981321724911   T   T   T
  3.4842981321724911  1.7421490660862455 -0.0000000000000000   T   T   T
  3.4842981321724911  5.2264471982587368 -0.0000000000000000   T   T   T
  0.0000000000000000  3.4842981321724911  1.7421490660862458   T   T   T
  0.0000000000000000  3.4842981321724911  5.2264471982587368   T   T   T
  0.0000000000000000  1.7421490660862455  3.4842981321724911   T   T   T
  0.0000000000000000  5.2264471982587368  3.4842981321724911   T   T   T
  1.7421490660862455  3.4842981321724911 -0.0000000000000000   T   T   T
  5.2264471982587368  3.4842981321724911 -0.0000000000000000   T   T   T
  3.4842981321724911 -0.0000000000000000  5.2264471982587368   T   T   T
  3.4842981321724911 -0.0000000000000000  1.7421490660862458   T   T   T