O Si 
 1.0000000000000000
     7.7864765840257002   -0.0000000000000000    0.0693032733794965
    -0.0000000000000000    4.3225246902858601    0.0000000000000000
    -7.8123280838948279    0.0000000000000000    4.2747190485072499
 O   Si 
   8   4
Selective dynamics
Cartesian
  4.0991710586818115  1.4898289711297621  1.0936397736861700   T   T   T
  0.1930070167344022  2.8326957191560931  3.2309992979397970   T   T   T
 -4.6498539888762211  1.7083573949314050  3.2154402700142684   T   T   T
 -0.7436899469288099  2.6141672953544535  1.0780807457606398   T   T   T
 -0.7249466858319601  0.5624719236807212  3.3326764132603448   T   T   T
  3.1812173561154520  3.7600527666051349  1.1953168890067190   T   T   T
  1.3764918858113233  1.0656906588078328  0.6145281858787920   T   T   T
 -2.5296721561360829  3.2568340314780264  2.7518877101324164   T   T   T
 -0.0145744407504339  1.6522577528755256  4.3322738762100768   T   T   T
  3.8915896011969724  2.6702669374103296  2.1949143519564451   T   T   T
  2.9146443614688922  0.7438576515381381  0.2442253665979497   T   T   T
 -0.9915196804785216  3.5786670387477209  2.3815848908515762   T   T   T