C Si 
 1.0000000000000000
     4.3593279924229327    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    4.3593279924229327    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.3593279924229327
 C   Si 
   4   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.1796639962114663  2.1796639962114663   T   T   T
  2.1796639962114663  0.0000000000000000  2.1796639962114663   T   T   T
  2.1796639962114663  2.1796639962114663  0.0000000000000000   T   T   T
  1.0898319981057332  1.0898319981057329  1.0898319981057329   T   T   T
  3.2694959943171993  3.2694959943171993  1.0898319981057329   T   T   T
  3.2694959943171993  1.0898319981057329  3.2694959943171993   T   T   T
  1.0898319981057332  3.2694959943171993  3.2694959943171993   T   T   T