C Si 
 1.0000000000000000
     3.1571665049720590   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.1571665049720599    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    6.8704021081078448
 C   Si 
   4   2
Selective dynamics
Cartesian
 -0.0000000000000000  1.5785832524860293  4.1554284712424829   T   T   T
  1.5785832524860290  0.0000000000000000  0.7202274171885572   T   T   T
 -0.0000000000000000  1.5785832524860293  2.7149736368653654   T   T   T
  1.5785832524860290  0.0000000000000000  6.1501746909192851   T   T   T
 -0.0000000000000000  0.0000000000000000  1.7176005270269610   T   T   T
 -0.0000000000000000  0.0000000000000000  5.1528015810808832   T   T   T