Ca  O Si 
 1.0000000000000000
     3.9640465484841703   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    3.9640465484841703    0.0000000000000000
     0.0000000000000000    0.0000000000000000    3.9640465484841703
 Ca  O   Si 
   1   3   1
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
 -0.0000000000000000  1.9820232742420847  1.9820232742420847   T   T   T
  1.9820232742420847  0.0000000000000000  1.9820232742420847   T   T   T
  1.9820232742420847  1.9820232742420847  0.0000000000000000   T   T   T
  1.9820232742420847  1.9820232742420847  1.9820232742420847   T   T   T