Si 
 1.0000000000000000
     6.8066179749516182    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.8066179749516182   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    6.8066179749516182
 Si 
  12
Selective dynamics
Cartesian
  1.7016544937379046 -0.0000000000000000  3.4033089874758091   T   T   T
  5.1049634812137148 -0.0000000000000000  3.4033089874758091   T   T   T
  3.4033089874758091  1.7016544937379046 -0.0000000000000000   T   T   T
  3.4033089874758091  5.1049634812137148 -0.0000000000000000   T   T   T
  0.0000000000000000  3.4033089874758091  1.7016544937379048   T   T   T
  0.0000000000000000  3.4033089874758091  5.1049634812137148   T   T   T
  0.0000000000000000  1.7016544937379046  3.4033089874758091   T   T   T
  0.0000000000000000  5.1049634812137148  3.4033089874758091   T   T   T
  1.7016544937379046  3.4033089874758091 -0.0000000000000000   T   T   T
  5.1049634812137148  3.4033089874758091 -0.0000000000000000   T   T   T
  3.4033089874758091 -0.0000000000000000  5.1049634812137148   T   T   T
  3.4033089874758091 -0.0000000000000000  1.7016544937379048   T   T   T