O Si 
 1.0000000000000000
    12.8713834739121040    0.0000000000000000   -0.0000000000000000
    -6.4356917369560520   11.1469450702590809   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    3.6937378343353466
 O   Si 
  24  12
Selective dynamics
Cartesian
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