O Si 
 1.0000000000000000
     4.8429259020862645    0.0000000000000000    0.0159040283756427
     0.0000000000000000    8.2280563650839493   -0.0000000000000000
    -2.3678285241722148   -0.0000000000000000    4.3046955694123747
 O   Si 
   8   4
Selective dynamics
Cartesian
  2.3731953377020014  2.0522803617849452  1.2903212238101760   T   T   T
  0.1019020402120459  6.1663085443269159  3.0302783739778385   T   T   T
  3.3941806947533539  7.9577909394256086  1.9415549480895666   T   T   T
 -0.9190833168393028  3.8437627568836348  2.3790446496984456   T   T   T
  1.4999304267544824  8.1113422874786743  0.1588878447643819   T   T   T
  0.9751669511595655  3.9973141049366867  4.1617117530236358   T   T   T
  0.9691077354433016  0.3659756232632085  2.6755196959085241   T   T   T
  1.5059896424707473  4.4800038058051905  1.6450799018794826   T   T   T
  2.0609079722439194  0.5059430424950302  1.5200580415363814   T   T   T
  0.4141894056701270  4.6199712250369975  2.8005415562516305   T   T   T
  2.7845930647916743  3.5918596209319968  1.3005592193758382   T   T   T
 -0.3094956868776273  7.7058878034739777  3.0200403784121752   T   T   T