Si 
 1.0000000000000000
     6.8066179749514726    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.8066179749514726    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.8066179749514726
 Si 
  12
Selective dynamics
Cartesian
  1.7016544937378681  0.0000000000000000  3.4033089874757363   T   T   T
  5.1049634812136038  0.0000000000000000  3.4033089874757363   T   T   T
  3.4033089874757363  1.7016544937378681  0.0000000000000000   T   T   T
  3.4033089874757363  5.1049634812136038  0.0000000000000000   T   T   T
  0.0000000000000000  3.4033089874757363  1.7016544937378684   T   T   T
  0.0000000000000000  3.4033089874757363  5.1049634812136038   T   T   T
  0.0000000000000000  1.7016544937378681  3.4033089874757363   T   T   T
  0.0000000000000000  5.1049634812136038  3.4033089874757363   T   T   T
  1.7016544937378681  3.4033089874757363  0.0000000000000000   T   T   T
  5.1049634812136038  3.4033089874757363  0.0000000000000000   T   T   T
  3.4033089874757363  0.0000000000000000  5.1049634812136038   T   T   T
  3.4033089874757363  0.0000000000000000  1.7016544937378684   T   T   T