Si 
 1.0000000000000000
     6.6143699022979483    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.6143699022979510   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.9454847841977738
 Si 
   8
Selective dynamics
Cartesian
  5.4175268109490524  5.4175268109490551 -0.0000000000000000   T   T   T
  1.1968430913488952  1.1968430913488954 -0.0000000000000000   T   T   T
  1.1968430913488952  5.4175268109490542 -0.0000000000000000   T   T   T
  5.4175268109490524  1.1968430913488954 -0.0000000000000000   T   T   T
  2.1103418598000778  2.1103418598000787  1.9727423920988871   T   T   T
  4.5040280424978700  4.5040280424978736  1.9727423920988871   T   T   T
  4.5040280424978700  2.1103418598000778  1.9727423920988871   T   T   T
  2.1103418598000778  4.5040280424978736  1.9727423920988871   T   T   T