Si 
 1.0000000000000000
     6.7077791318911224    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.7077791318911224   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.7077791318911224
 Si 
  12
Selective dynamics
Cartesian
  1.6769447829727806 -0.0000000000000000  3.3538895659455612   T   T   T
  5.0308343489183418 -0.0000000000000000  3.3538895659455612   T   T   T
  3.3538895659455612  1.6769447829727806 -0.0000000000000000   T   T   T
  3.3538895659455612  5.0308343489183418 -0.0000000000000000   T   T   T
  0.0000000000000000  3.3538895659455612  1.6769447829727808   T   T   T
  0.0000000000000000  3.3538895659455612  5.0308343489183418   T   T   T
  0.0000000000000000  1.6769447829727806  3.3538895659455612   T   T   T
  0.0000000000000000  5.0308343489183418  3.3538895659455612   T   T   T
  1.6769447829727806  3.3538895659455612 -0.0000000000000000   T   T   T
  5.0308343489183418  3.3538895659455612 -0.0000000000000000   T   T   T
  3.3538895659455612 -0.0000000000000000  5.0308343489183418   T   T   T
  3.3538895659455612 -0.0000000000000000  1.6769447829727808   T   T   T