Si 
 1.0000000000000000
     6.7200704659451826    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.7200704659451826   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.7200704659451826
 Si 
  12
Selective dynamics
Cartesian
  1.6800176164862957 -0.0000000000000000  3.3600352329725913   T   T   T
  5.0400528494588865 -0.0000000000000000  3.3600352329725913   T   T   T
  3.3600352329725913  1.6800176164862957 -0.0000000000000000   T   T   T
  3.3600352329725913  5.0400528494588865 -0.0000000000000000   T   T   T
  0.0000000000000000  3.3600352329725913  1.6800176164862959   T   T   T
  0.0000000000000000  3.3600352329725913  5.0400528494588865   T   T   T
  0.0000000000000000  1.6800176164862957  3.3600352329725913   T   T   T
  0.0000000000000000  5.0400528494588865  3.3600352329725913   T   T   T
  1.6800176164862957  3.3600352329725913 -0.0000000000000000   T   T   T
  5.0400528494588865  3.3600352329725913 -0.0000000000000000   T   T   T
  3.3600352329725913 -0.0000000000000000  5.0400528494588865   T   T   T
  3.3600352329725913 -0.0000000000000000  1.6800176164862959   T   T   T