Si 
 1.0000000000000000
     6.6912314120413132    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.6912314120413141    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.9601784825018984
 Si 
   8
Selective dynamics
Cartesian
  5.4772689291945129  5.4772689291945111  0.0000000000000000   T   T   T
  1.2139624828468030  1.2139624828468027  0.0000000000000000   T   T   T
  1.2139624828468030  5.4772689291945102  0.0000000000000000   T   T   T
  5.4772689291945129  1.2139624828468027  0.0000000000000000   T   T   T
  2.1316532231738541  2.1316532231738532  1.9800892412509488   T   T   T
  4.5595781888674587  4.5595781888674587  1.9800892412509490   T   T   T
  4.5595781888674587  2.1316532231738523  1.9800892412509488   T   T   T
  2.1316532231738541  4.5595781888674587  1.9800892412509490   T   T   T