C Si 
 1.0000000000000000
     3.0846778118520999   -0.0000000000000000   -0.0000000000000000
    -1.5423389059260499    2.6714093475541132   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000   52.8912066194575274
 C   Si 
  21  21
Selective dynamics
Cartesian
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 -0.0000000000000000 -0.0000000000000000 32.1125285493842583   T   T   T
 -0.0000000000000000 -0.0000000000000000 24.5566418868809713   T   T   T
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  1.5423389059260508  0.8904697825180391  4.4076107950393064   T   T   T
  1.5423389059260508  0.8904697825180391 52.2615596396281319   T   T   T
  1.5423389059260508  0.8904697825180391 42.1870440944118457   T   T   T
  1.5423389059260508  0.8904697825180391 34.6311574346238089   T   T   T
  1.5423389059260508  0.8904697825180391 29.5938996627612880   T   T   T
  1.5423389059260508  0.8904697825180391 19.5193841148404879   T   T   T
  1.5423389059260508  0.8904697825180391 14.4821263417031290   T   T   T
 -0.0000000000000000 -0.0000000000000000  0.0000102415978916   T   T   T
 -0.0000000000000000 -0.0000000000000000 37.7794435410291172   T   T   T
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 -0.0000000000000000 -0.0000000000000000 45.3353302044830002   T   T   T
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  1.5423389059260508  0.8904697825180391 17.6304124504686826   T   T   T
  1.5423389059260508  0.8904697825180391 12.5931546762210420   T   T   T
  1.5423389059260508  0.8904697825180391  2.5186391292250558   T   T   T
  1.5423389059260508  0.8904697825180391 27.7049279972737530   T   T   T
  1.5423389059260508  0.8904697825180391 32.7421857704790966   T   T   T
  1.5423389059260508  0.8904697825180391 40.2980724285387879   T   T   T
  1.5423389059260508  0.8904697825180391 50.3725879753207550   T   T   T