O Si 
 1.0000000000000000
     6.6231074632488900   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6231074632488900   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    7.9905036819349684
 O   Si 
  16   8
Selective dynamics
Cartesian
  2.1441665268707784  2.1441665268707899  1.9976259204839131   T   T   T
  4.4789409363780770  4.4789409363780690  1.9976259204839131   T   T   T
  2.1441665268707784  4.4789409363780690  5.9928777614514690   T   T   T
  4.4789409363780770  2.1441665268707899  5.9928777614514690   T   T   T
 -0.0000000000000009  3.3115537316244432  4.8699447064312293   T   T   T
  3.3115537316244601 -0.0000000000000009  3.1205589755041205   T   T   T
 -0.0000000000000009  3.3115537316244432  0.8746928654635594   T   T   T
  3.3115537316244601 -0.0000000000000009  7.1158108164717033   T   T   T
  2.1211744415919278  2.2332602600620697  7.4862505042569465   T   T   T
  4.5019330216569573  4.3898472031868581  7.4862505042569474   T   T   T
  2.2332602600620630  4.5019330216569973  0.5042531776783239   T   T   T
  4.3898472031868936  2.1211744415919309  0.5042531776783234   T   T   T
  2.1211744415919278  4.3898472031868581  3.4909986632893051   T   T   T
  4.5019330216569573  2.2332602600620697  3.4909986632893033   T   T   T
  2.2332602600620630  2.1211744415919309  4.4995050186459746   T   T   T
  4.3898472031868936  4.5019330216569973  4.4995050186459746   T   T   T
  3.5734718931901104  1.5601694373074086  7.1975168244811236   T   T   T
  3.0496355700587410  5.0629380259412740  7.1975168244811201   T   T   T
  1.5601694373074246  3.0496355700587028  0.7929868574543055   T   T   T
  5.0629380259413646  3.5734718931900940  0.7929868574543040   T   T   T
  3.5734718931901104  5.0629380259412740  3.2022649835134178   T   T   T
  3.0496355700587410  1.5601694373074086  3.2022649835134178   T   T   T
  1.5601694373074246  3.5734718931900940  4.7882386984220391   T   T   T
  5.0629380259413646  3.0496355700587028  4.7882386984220409   T   T   T