C Si 
 1.0000000000000000
     3.0827644885440928   -0.0000000000000000    0.0000000000000000
    -1.5413822442720464    2.6697523609637250    0.0000000000000000
     0.0000000000000000    0.0000000000000000   20.1365333170021827
 C   Si 
   8   8
Selective dynamics
Cartesian
  0.0000000000000000 -0.0000000000000000  1.8903170592481739   T   T   T
  0.0000000000000000  0.0000000000000000 11.9585837177492689   T   T   T
 -0.0000000000000009  1.7798349073091499  6.9244503884378101   T   T   T
  1.5413822442720464  0.8899174536545750 16.9927170469388962   T   T   T
 -0.0000000000000009  1.7798349073091499 14.4756503823151572   T   T   T
  1.5413822442720464  0.8899174536545750  4.4073837238140650   T   T   T
 -0.0000000000000009  1.7798349073091499 19.5097837115933928   T   T   T
  1.5413822442720464  0.8899174536545750  9.4415170530922961   T   T   T
 -0.0000000000000000  0.0000000000000000  0.0025170607037206   T   T   T
  0.0000000000000000  0.0000000000000000 10.0707837192048153   T   T   T
 -0.0000000000000009  1.7798349073091499 12.5878503838354625   T   T   T
  1.5413822442720464  0.8899174536545750  2.5195837253343698   T   T   T
 -0.0000000000000009  1.7798349073091499  5.0366503899385791   T   T   T
  1.5413822442720464  0.8899174536545750 15.1049170484396722   T   T   T
 -0.0000000000000009  1.7798349073091499 17.6219837129841324   T   T   T
  1.5413822442720464  0.8899174536545750  7.5537170544830490   T   T   T