O Si 
 1.0000000000000000
     6.2623732268275250   -0.0000000000000000    0.8149433405390221
    -0.0000000000000000    3.6829213823062790   -0.0000000000000000
    -3.2188273228856108    0.0000000000000000    3.2636543590591551
 O   Si 
  16   8
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000 -0.0000000000000000   T   T   T
 -1.6094136614428118  0.0000000000000000  1.6318271795295762   T   T   T
  3.1311866134137643  1.8414606911531399  0.4074716702695116   T   T   T
  1.5217729519709513  1.8414606911531399  2.0392988497990907   T   T   T
 -0.8047068307214055  0.4903285261847828  0.8159135897647881   T   T   T
  2.3264797826923616  2.3317892173379171  1.2233852600343007   T   T   T
 -2.4141204921642174  3.1925928561214958  2.4477407692943700   T   T   T
  0.7170661212495477  1.3511321649683599  2.8552124395638825   T   T   T
  0.9739989839484321  2.5371821180683352  3.4486613948210993   T   T   T
  0.4601332585506594  2.5371821180683343  2.2617634843066532   T   T   T
 -2.1571876294653323  4.3786428092214722  3.0411897245515909   T   T   T
  3.5913198719644255  4.3786428092214713  2.6692351545761710   T   T   T
  2.0695469199934746  1.1457392642379500  0.6299363047770811   T   T   T
  2.5834126453912392  1.1457392642379500  1.8168342152915262   T   T   T
  5.2007335334072318 -0.6957214269151888  1.0374079750465888   T   T   T
 -0.5477739680225192 -0.6957214269151888  1.4093625450220129   T   T   T
  2.2584542002315784  3.3044327631436734  2.6030280288865941   T   T   T
  2.3945053651531261  3.3044327631436738 -0.1562575088179916   T   T   T
  5.3896408136453404  1.4629720719905366  3.0104996991561044   T   T   T
 -0.7366812482606312  1.4629720719905375 -0.5637291790875029   T   T   T
  0.7850917037103234  0.3784886191626061  1.4755696707115815   T   T   T
  0.6490405387887719  0.3784886191626063  4.2348552084161755   T   T   T
 -2.3460949097034369  2.2199493103157457  1.0680980004420770   T   T   T
  3.7802271522025359  2.2199493103157453  4.6423268786856875   T   T   T