O Si 
 1.0000000000000000
     7.0616021878169386    0.0000000000000000    0.0000000000000000
     0.0000000000000000    7.0616021878169386    0.0000000000000000
     0.0000000000000000    0.0000000000000000    7.0616021878169386
 O   Si 
  16   8
Selective dynamics
Cartesian
  1.1241677905020397  1.1241677905020371  1.1241677905020442   T   T   T
  2.4066333034063936  5.9374343973146964  4.6549688844104917   T   T   T
  5.9374343973146946  4.6549688844104793  2.4066333034064007   T   T   T
  4.6549688844104882  2.4066333034063883  5.9374343973147052   T   T   T
  4.4944932269767657  4.7028456077285474  0.2166384671647856   T   T   T
  6.0979100547484553  2.3587565800883188  3.7474395610731541   T   T   T
  2.5671089608400131  1.1720445138201021  3.3141626267436539   T   T   T
  0.9636921330683941  5.8895576739967206  6.8449637206520944   T   T   T
  0.2166384671647856  4.4944932269767657  4.7028456077285430   T   T   T
  3.7474395610731532  6.0979100547484482  2.3587565800883143   T   T   T
  3.3141626267436530  2.5671089608400175  1.1720445138201065   T   T   T
  6.8449637206520926  0.9636921330683937  5.8895576739967428   T   T   T
  4.7028456077285377  0.2166384671647854  4.4944932269767586   T   T   T
  2.3587565800883206  3.7474395610731541  6.0979100547484499   T   T   T
  1.1720445138201043  3.3141626267436530  2.5671089608400139   T   T   T
  5.8895576739967277  6.8449637206520908  0.9636921330683940   T   T   T
  2.0599349822385400  2.0599349822385427  2.0599349822385391   T   T   T
  1.4708661116698776  5.0016672055783493  5.5907360761468956   T   T   T
  5.0016672055783529  5.5907360761468903  1.4708661116698762   T   T   T
  5.5907360761468921  1.4708661116698789  5.0016672055783529   T   T   T
  0.1958555966447324  0.1958555966447326  0.1958555966447328   T   T   T
  3.3349454972636887  6.8657465911721154  3.7266566905531566   T   T   T
  6.8657465911721172  3.7266566905531571  3.3349454972636869   T   T   T
  3.7266566905531584  3.3349454972636878  6.8657465911721145   T   T   T