C Si 
 1.0000000000000000
     3.0846778118192226   -0.0000000000000000    0.0000000000000000
    -1.5423389059096113    2.6714093475256382    0.0000000000000000
     0.0000000000000000    0.0000000000000000    5.0372577733854076
 C   Si 
   2   2
Selective dynamics
Cartesian
 -0.0000000154233895  1.7809395739217908  2.5211475156081038   T   T   T
  1.5423388904862225  0.8904697914132443  0.0025186289153998   T   T   T
 -0.0000000154233895  1.7809395739217908  4.4101191805702156   T   T   T
  1.5423388904862225  0.8904697914132443  1.8914902938775113   T   T   T