O Si 
 1.0000000000000000
     3.2522331810943483    0.2615267322747038    0.5669337655610949
    -3.6354154001972714    2.8717192934483826   -1.0598167539361127
     1.0145593692201529    0.6730975894144583    4.1995876064523694
 O   Si 
   8   4
Selective dynamics
Cartesian
 -0.4799909166666424  2.3864341709322403  1.4652732596014550   T   T   T
  0.3418789704701856  2.1965434747325130  2.4989786442016655   T   T   T
 -2.0641850713446224  2.7010309571246132  2.5320412015197076   T   T   T
  0.6599954694374571  1.8316728535443401  1.3243689758491879   T   T   T
  1.2245174938450016  1.6438878198621558  3.2960212345500812   T   T   T
  0.5694058567944359  1.8557356165149808  0.0310284735623320   T   T   T
 -1.9386696155632990  1.3662041721493625 -1.5557993302216413   T   T   T
  1.5967144413298395  2.1416439987868361  2.1742237420557502   T   T   T
 -0.0461358297038445  3.4314232396288697  0.1425307407088839   T   T   T
 -1.9236830053036280  3.3814227733350064  1.0115877177246761   T   T   T
 -1.1034707747589330  1.6773379964119473 -0.0255240872842403   T   T   T
  3.1058651694286166  0.8368086334096841  3.6298341660935218   T   T   T