O Si 
 1.0000000000000000
     4.8150466474942810   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    8.1169389483537273    0.0000000000000000
     0.0000000000000000    0.0000000000000000    8.6416381976242196
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  2.4075233237471472  4.0584694741768592  0.0000000000000000   T   T   T
  0.0000000000000000  4.0584694741768592  4.3208190988121276   T   T   T
  2.4075233237471472 -0.0000000000000000  4.3208190988121276   T   T   T
  1.2037616618735736  2.0292347370884296  5.5443112649988215   T   T   T
  3.6112849856207641  6.0877042112653266  7.4181460314375984   T   T   T
  3.6112849856207641  6.0877042112653266  3.0973269326255406   T   T   T
  1.2037616618735736  2.0292347370884296  1.2234921661866009   T   T   T
  1.9446740559021054  7.7087578797180951  1.7995773277491725   T   T   T
  0.4628492678450684  4.4666505428125394  1.7995773277491725   T   T   T
  2.8703725915922020  3.6502884055412257  2.5212417710630026   T   T   T
  4.3521973796492635  0.4081810686356332  2.5212417710630026   T   T   T
  2.8703725915922020  0.4081810686356332  6.8420608698751311   T   T   T
  4.3521973796492635  3.6502884055412257  6.8420608698751311   T   T   T
  1.9446740559021054  4.4666505428125394  6.1203964265612747   T   T   T
  0.4628492678450684  7.7087578797180951  6.1203964265612747   T   T   T
  3.0869130336408261  7.6060208330563865  2.9516908721594657   T   T   T
  4.1356569376006505  4.5693875894741858  2.9516908721594657   T   T   T
  1.7281336138535011  3.5475513588795877  1.3691282266526914   T   T   T
  0.6793897098936603  0.5109181152972566  1.3691282266526914   T   T   T
  1.7281336138535011  0.5109181152972566  5.6899473254648258   T   T   T
  0.6793897098936603  3.5475513588795877  5.6899473254648258   T   T   T
  3.0869130336408261  4.5693875894741858  7.2725099709716252   T   T   T
  4.1356569376006505  7.6060208330563865  7.2725099709716252   T   T   T