C Si 
 1.0000000000000000
     3.0846778117869440    0.0000000000000000    0.0000000000000000
    -1.5423389058934720    2.6714093474976868    0.0000000000000000
     0.0000000000000000    0.0000000000000000   15.1117733203318032
 C   Si 
   6   6
Selective dynamics
Cartesian
  0.0000000000000000 -0.0000000000000000  1.8906339643281576   T   T   T
  0.0000000000000000 -0.0000000000000000  9.4465206244940632   T   T   T
 -0.0000000000000006  1.7809395649984572 11.9651495106088266   T   T   T
  1.5423389058934718  0.8904697824992286  4.4092628504429232   T   T   T
 -0.0000000000000006  1.7809395649984572  6.9278917379123293   T   T   T
  1.5423389058934718  0.8904697824992286 14.4837783980782344   T   T   T
 -0.0000000000000000  0.0000000000000000  0.0016622996480952   T   T   T
  0.0000000000000000  0.0000000000000000  7.5575489598139987   T   T   T
 -0.0000000000000006  1.7809395649984572 10.0761778458125590   T   T   T
  1.5423389058934718  0.8904697824992286  2.5202911856466530   T   T   T
 -0.0000000000000006  1.7809395649984572  5.0389200724408232   T   T   T
  1.5423389058934718  0.8904697824992286 12.5948067326067381   T   T   T