O Si 
 1.0000000000000000
     4.9202646878236767    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.9202646878237477    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.6008123953042226
 O   Si 
   8   4
Selective dynamics
Cartesian
  1.1570977566851923  0.6342480186664159  1.2266195878569699   T   T   T
  3.7631669311385152  4.2860166691573998  4.5270257855091183   T   T   T
  1.8258843252454486  3.6172301005970682  2.8768226866830813   T   T   T
  3.0943803625782906  1.3030345872266826  6.1772288843352481   T   T   T
  1.3030345872266529  3.0943803625782915  0.4235835109691069   T   T   T
  3.6172301005970882  1.8258843252454622  3.7239897086212461   T   T   T
  0.6342480186664097  1.1570977566851850  5.3741928074473666   T   T   T
  4.2860166691573323  3.7631669311385987  2.0737866097951625   T   T   T
  1.5825052101769408  1.5825052101769572  0.0000000000000000   T   T   T
  3.3377594776467818  3.3377594776467943  3.3004061976521428   T   T   T
  0.8776271337349130  4.0426375540888344  1.6502030988260714   T   T   T
  4.0426375540888015  0.8776271337349251  4.9506092964782189   T   T   T