C Si 
 1.0000000000000000
     3.0548576249314667   -0.0000000000000000    0.0000000000000000
    -1.5274288124657334    2.6455843081352453    0.0000000000000000
     0.0000000000000000   -0.0000000000000000    5.1221882182075866
 C   Si 
   2   2
Selective dynamics
Cartesian
 -0.0000000152742886  1.7637228809087770  2.5766955319060463   T   T   T
  1.5274287971914453  0.8818614448636960  0.0156014228022517   T   T   T
 -0.0000000152742886  1.7637228809087770  4.4714354563475895   T   T   T
  1.5274287971914453  0.8818614448636960  1.9103413472437936   T   T   T