C Si 
 1.0000000000000000
     3.0827644885058252    0.0000000000000000    0.0000000000000000
    -1.5413822442529126    2.6697523609305849   -0.0000000000000000
    -0.0000000000000000    0.0000000000000000    5.0341333294888759
 C   Si 
   2   2
Selective dynamics
Cartesian
 -0.0000000154138232  1.7798349161862315  2.5195837314046297   T   T   T
  1.5413822288390906  0.8899174625427031  0.0025170666601906   T   T   T
 -0.0000000154138232  1.7798349161862315  4.4073837299720626   T   T   T
  1.5413822288390906  0.8899174625427031  1.8903170652276233   T   T   T