O Si 
 1.0000000000000000
     4.9049817801732303    0.0000000000000000    0.2512179217055709
     0.0000000000000000    5.7495893763530956    0.0000000000000000
     1.9640932772612629    0.0000000000000000    5.3741894798138432
 O   Si 
   8   4
Selective dynamics
Cartesian
  2.7452695664198385  0.0000000000000000  4.1466225294545858   T   T   T
  5.2261595545543686  0.0000000000000000  3.0783936745059126   T   T   T
  4.9299341064593989  2.8747946881765487  1.6250372978150593   T   T   T
  3.2914924247238750  2.8747946881765487  4.2255700808372474   T   T   T
  3.1327042504336404  1.3934293889929659  2.1949418180376283   T   T   T
  3.1327042504336404  4.3561599873601322  2.1949418180376283   T   T   T
  5.9585674008398426  4.2344396958052339  5.0276020855282404   T   T   T
  5.9585674008398426  1.5151496805478666  5.0276020855282404   T   T   T
  6.0318225074299052  0.0000000000000000  4.4623999210769982   T   T   T
  3.6531547061786420  0.0000000000000000  2.8283018774690669   T   T   T
  1.8994247415265180  2.8747946881765487  5.0935936992079958   T   T   T
  3.6224007576954977  2.8747946881765487  2.6240026644884926   T   T   T