O Si 
 1.0000000000000000
     7.4767972963908962    0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    7.4767972963908962    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    7.4767972963908962
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.9345996620488619  0.9345996620488620  0.9345996620488619   T   T   T
  6.5421976343420321  2.8037989861465862  4.6729983102443091   T   T   T
  2.8037989861465857  4.6729983102443100  6.5421976343420321   T   T   T
  4.6729983102443091  6.5421976343420329  2.8037989861465857   T   T   T
  2.8037989861465857  6.5421976343420329  4.6729983102443091   T   T   T
  6.5421976343420321  4.6729983102443100  2.8037989861465857   T   T   T
  4.6729983102443091  2.8037989861465862  6.5421976343420321   T   T   T
  0.9345996620488619  4.6729983102443100  4.6729983102443091   T   T   T
  6.5421976343420321  6.5421976343420329  0.9345996620488619   T   T   T
  2.8037989861465857  0.9345996620488620  2.8037989861465857   T   T   T
  2.8037989861465857  2.8037989861465862  0.9345996620488619   T   T   T
  6.5421976343420321  0.9345996620488620  6.5421976343420321   T   T   T
  4.6729983102443091  0.9345996620488620  4.6729983102443091   T   T   T
  0.9345996620488619  6.5421976343420329  6.5421976343420321   T   T   T
  0.9345996620488619  2.8037989861465862  2.8037989861465857   T   T   T
  4.6729983102443091  4.6729983102443100  0.9345996620488619   T   T   T
 -0.0000000000000004  0.0000000000000000 -0.0000000000000004   T   T   T
 -0.0000000000000004  3.7383986481954481  3.7383986481954476   T   T   T
  3.7383986481954476  3.7383986481954481 -0.0000000000000004   T   T   T
  3.7383986481954476  0.0000000000000000  3.7383986481954476   T   T   T
  5.6075979722931715  1.8691993240977240  5.6075979722931715   T   T   T
  1.8691993240977238  1.8691993240977240  1.8691993240977238   T   T   T
  1.8691993240977238  5.6075979722931724  5.6075979722931715   T   T   T
  5.6075979722931715  5.6075979722931724  1.8691993240977238   T   T   T