C Si 
 1.0000000000000000
     3.0829872178801687   -0.0000000000000000   -0.0000000000000000
    -1.5414936089400844    2.6699452502269372    0.0000000000000000
     0.0000000000000000   -0.0000000000000000    5.0344970450904363
 C   Si 
   2   2
Selective dynamics
Cartesian
 -0.0000000154149365  1.7799635090511094  2.5197657711085242   T   T   T
  1.5414935935251488  0.8899817589754634  0.0025172485633043   T   T   T
 -0.0000000154149365  1.7799635090511094  4.4077021629358981   T   T   T
  1.5414935935251488  0.8899817589754634  1.8904536403906786   T   T   T