O Si 
 1.0000000000000000
     4.9457688136448432    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.2359606842745521    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.8391256042703308
 O   Si 
   8   4
Selective dynamics
Cartesian
  4.7773590653887741  2.6509652326282156  1.5590345262464289   T   T   T
  0.1684097482560760  3.5849954516463338  3.9785973283815972   T   T   T
  2.3044746585663467  0.4670151095090582  1.5590345262464289   T   T   T
  2.6412941550785005  5.7689455747654907  3.9785973283815972   T   T   T
  4.3581043912412074  5.1456658909458062  2.0726821909081208   T   T   T
  0.5876644224036373  1.0902947933287446  4.4922449930432897   T   T   T
  1.8852199844187858  4.2082751354660184  2.0726821909081208   T   T   T
  3.0605488292260610  2.0276855488085297  4.4922449930432897   T   T   T
  4.5880388959810068  2.3416719666854671  4.8368014331837870   T   T   T
  0.3577299176638352  3.8942887175890801  2.4172386310486136   T   T   T
  2.1151544891585878  0.7763083754518051  4.8368014331837870   T   T   T
  2.8306143244862594  5.4596523088227489  2.4172386310486136   T   T   T