O Si 
 1.0000000000000000
     7.4086740957240682   -0.0000000000000000    0.2576230244323818
    -0.0000000000000000    4.2917143510827831    0.0000000000000000
    -7.3130678015681418    0.0000000000000000    4.0401176843681688
 O   Si 
   8   4
Selective dynamics
Cartesian
  4.0259602657375444  1.4597072169310283  1.1576691883478387   T   T   T
  0.3694263649534768  2.8320071341517545  3.1777280305319291   T   T   T
 -4.3665478262981718  1.5297136196093009  3.0196700625834083   T   T   T
 -0.7100139255141049  2.7620007314734818  0.9996112203993173   T   T   T
 -0.6759663348065831  0.7251317263825825  3.2476572406584983   T   T   T
  2.9805675659774860  3.5665826247002013  1.2275983984744105   T   T   T
  1.2952746276764089  0.9668454581817418  0.6923439898116550   T   T   T
 -2.3612592731076578  3.3248688929010428  2.7124028319957429   T   T   T
  0.1002752695984925  1.6464091369003575  4.3452793995685219   T   T   T
  3.7568091703825597  2.6453052141824305  2.3252205573844322   T   T   T
  2.8306681350635619  0.6082282315889366  0.3081562238268223   T   T   T
 -0.8258657657205033  3.6834861194938475  2.3282150660109076   T   T   T