O Si 
 1.0000000000000000
     6.7881383299785636   -0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.7881383299785627    0.0000000000000000
     0.0000000000000000    0.0000000000000000    7.1329168974161252
 O   Si 
  16   8
Selective dynamics
Cartesian
  5.5907817886450095  4.5914257063228359  1.7832292243540315   T   T   T
  1.1973565413335501  2.1967126236557291  1.7832292243540315   T   T   T
  4.5914257063228332  1.1973565413335505  5.3496876730620970   T   T   T
  2.1967126236557277  5.5907817886450148  5.3496876730620970   T   T   T
 -0.0000000000000000  3.3940691649892836  6.9157771979874907   T   T   T
  3.3940691649892822  0.0000000000000000  0.2171396994286386   T   T   T
  3.3940691649892822  0.0000000000000000  3.3493187492794263   T   T   T
 -0.0000000000000000  3.3940691649892836  3.7835981481367020   T   T   T
  4.6092259104254678  2.3495070573612020  0.6030119434678490   T   T   T
  2.1789124195530927  4.4386312726173607  0.6030119434678490   T   T   T
  2.3495070573611994  2.1789124195530958  6.5299049539482752   T   T   T
  4.4386312726173562  4.6092259104254696  6.5299049539482752   T   T   T
  1.2151567454361880  1.0445621076280815  4.1694703921759162   T   T   T
  5.5729815845423767  5.7435762223504927  4.1694703921759162   T   T   T
  5.7435762223504829  1.2151567454361882  2.9634465052402144   T   T   T
  1.0445621076280809  5.5729815845423847  2.9634465052402144   T   T   T
  5.3598758293342472  3.7633149306443165  0.4186438363968524   T   T   T
  1.4282625006443148  3.0248233993342550  0.4186438363968524   T   T   T
  3.7633149306443130  1.4282625006443168  6.7142730610192762   T   T   T
  3.0248233993342506  5.3598758293342517  6.7142730610192762   T   T   T
  1.9658066643449672  6.4188925643235395  3.9851022851049152   T   T   T
  4.8223316656335946  0.3692457656550303  3.9851022851049152   T   T   T
  0.3692457656550296  1.9658066643449685  3.1478146123112087   T   T   T
  6.4188925643235324  4.8223316656336017  3.1478146123112087   T   T   T