C Si 
 1.0000000000000000
     3.1571665108342803   -0.0000000000000000   -0.0000000000000000
     0.0000000000000000    3.1571665108342812    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    6.8704021195846865
 C   Si 
   4   2
Selective dynamics
Cartesian
 -0.0000000000000000  1.5785832554171404  4.1554284778562245   T   T   T
  1.5785832554171404  0.0000000000000000  0.7202274180638814   T   T   T
 -0.0000000000000000  1.5785832554171404  2.7149736417284602   T   T   T
  1.5785832554171404  0.0000000000000000  6.1501747015208021   T   T   T
 -0.0000000000000000  0.0000000000000000  1.7176005298961712   T   T   T
 -0.0000000000000000  0.0000000000000000  5.1528015896885115   T   T   T