O Si 
 1.0000000000000000
     5.2760973077695832   -0.0000000000000000   -0.0000000000000000
    -2.6380486538847916    4.5692343013671426   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    8.4856094842027332
 O   Si 
   8   4
Selective dynamics
Cartesian
 -0.0000000263804869  3.0461562161422089  2.1214023710506833   T   T   T
  2.6380486275043058  1.5230781156864954  6.3642071131520490   T   T   T
  2.6380486275043054  0.0000000152307811 -0.0000000000000000   T   T   T
 -1.3190243533228827  2.2846171659143519 -0.0000000000000000   T   T   T
  1.3190243005619093  2.2846171659143519 -0.0000000000000000   T   T   T
  2.6380486275043054  0.0000000152307811  4.2428047421013666   T   T   T
 -1.3190243533228827  2.2846171659143519  4.2428047421013666   T   T   T
  1.3190243005619093  2.2846171659143519  4.2428047421013666   T   T   T
 -0.0000000263804869  3.0461562161422089  3.7253172390784748   T   T   T
  2.6380486275043058  1.5230781156864952  7.9681219811798414   T   T   T
  2.6380486275043058  1.5230781156864954  4.7602922451242549   T   T   T
 -0.0000000263804872  3.0461562161422093  0.5174875030228914   T   T   T