O Si 
 1.0000000000000000
     5.2044646869489419    0.0000000000000000    0.0000000000000000
     0.0000000000000000    7.0710309649380321    0.0000000000000000
     0.0000000000000000    0.0000000000000000    5.1372056218087803
 O   Si 
   8   4
Selective dynamics
Cartesian
  5.1192745323616231  3.1743789753249398  1.5466893751539925   T   T   T
  0.0851901545873234  3.8966519896130904  4.1152921860583795   T   T   T
  2.5170421888871473  0.3611365071440732  1.5466893751539925   T   T   T
  2.6874224980617951  6.7098944577939559  4.1152921860583795   T   T   T
  4.3203530348878658  5.6101995132459770  2.3062490550234167   T   T   T
  0.8841116520610759  1.4608314516920529  4.8748518659278055   T   T   T
  1.7181206914133953  4.9963469341610693  2.3062490550234167   T   T   T
  3.4863439955355489  2.0746840307769636  4.8748518659278055   T   T   T
  4.9959624271042324  2.6516366117245225  5.1372227286726115   T   T   T
  0.2085022598447066  4.4193943532135069  2.5686199177682227   T   T   T
  2.3937300836297650  0.8838788707444909  5.1372227286726115   T   T   T
  2.8107346033191787  6.1871520941935412  2.5686199177682227   T   T   T