O Si 
 1.0000000000000000
     6.7666342789719351   -0.4104839177512149   -1.0063223118096631
     1.3530020686947728    3.7883712915612686    3.3298398628062800
    -2.5887195180948059   -1.8065605296894918    6.0195004714534068
 O   Si 
  12   6
Selective dynamics
Cartesian
 -1.5387682874735127 -0.4068327122847941  5.5106090059860202   T   T   T
  4.6927464517361619  2.1576173038659121  5.8981592212603351   T   T   T
  2.1536767054014136  0.7232766863808335  2.6008132153289107   T   T   T
  0.7483603574890951  0.9810129231490685  5.0805545087122335   T   T   T
  2.9422361420279559  0.2277245858174693  6.2580220624654306   T   T   T
 -0.6851557401159476 -0.3165045179614731  2.6947912090706785   T   T   T
  4.6192478255778360  1.1645761466528364  3.0506837980289245   T   T   T
  1.7047775468105810 -1.2517133614515448  4.3449500398937753   T   T   T
  7.1764039558792936  2.4690367658461811  2.3234013944812419   T   T   T
  3.5660072680776591  0.2591639651188002  0.6416840261669186   T   T   T
  2.7194242614884572  2.5723541835548809  4.3227002263428966   T   T   T
  0.5984716658360120  1.0759046395559437  7.7127693618788777   T   T   T
  3.1657011130183452  1.8976967475871824  2.9017558743897447   T   T   T
 -1.3354373835485291  0.1943759967433905  4.0803106394474007   T   T   T
  2.6148668851228036 -0.4818174568659434  1.7027954277064989   T   T   T
  1.5162923053791775 -0.3462474493704177  5.6753400081499823   T   T   T
  1.0852329621592507  2.5244342891774347  4.7575286533277730   T   T   T
  3.8831123974659190  1.3064016327906514  7.0461766386844813   T   T   T