O Si 
 1.0000000000000000
     3.3509774045690452    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    3.3509774045689986    0.0000000000000001
     0.0000000000000000    0.0000000000000005    9.0340893849232771
 O   Si 
  16   8
Selective dynamics
Cartesian
  1.6754887022845228  2.1278107599574274  0.0000000000000001   T   T   T
  1.6754887022845228  1.2231666446115737  4.5170446924616403   T   T   T
  1.2231666446115845  1.6754887022844989  6.7755670386924507   T   T   T
  2.1278107599574594  1.6754887022844989  2.2585223462308202   T   T   T
  1.7738253499025411  1.7738253499025138  5.6463058655770393   T   T   T
  1.5771520546665054  1.5771520546664815  1.1292611731154101   T   T   T
  1.5771520546665054  1.7738253499025138  3.3877835193462253   T   T   T
  1.7738253499025411  1.5771520546664815  7.9048282118078586   T   T   T
  4.3389896218071522  1.0388128522331135  2.1933158619522208   T   T   T
 -0.9880122172381047  2.3121645523358842  6.7103605544138452   T   T   T
  2.3121645523359167  4.3389896218070945  8.9688829006446742   T   T   T
  1.0388128522331295 -0.9880122172380925  4.4518382081830428   T   T   T
 -0.9880122172381047  1.0388128522331135  6.8407735229710420   T   T   T
  4.3389896218071540  2.3121645523358842  2.3237288305094115   T   T   T
  1.0388128522331295  4.3389896218070936  0.0652064842785962   T   T   T
  2.3121645523359162 -0.9880122172380923  4.5822511767402299   T   T   T
  3.2896899512070128  1.8415014250305342  1.0488711552414751   T   T   T
  0.0612874533620349  1.5094759795384594  5.5659158477031045   T   T   T
  1.5094759795384833  3.2896899512069644  7.8244381939339256   T   T   T
  1.8415014250305597  0.0612874533620350  3.3073935014722959   T   T   T
  0.0612874533620349  1.8415014250305346  7.9852182296818102   T   T   T
  3.2896899512070128  1.5094759795384594  3.4681735372201521   T   T   T
  1.8415014250305592  3.2896899512069644  1.2096511909893415   T   T   T
  1.5094759795384831  0.0612874533620349  5.7266958834509794   T   T   T