Si 
 1.0000000000000000
    15.5563491861018193   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000   15.5563491861018193    0.0000000000000001
     0.0000000000000000    0.0000000000000001   15.5563491861018193
 Si 
  12
Selective dynamics
Cartesian
  3.8890872965254606  0.0000000000000001  7.7781745930509212   T   T   T
 11.6672618895764000  0.0000000000000001  7.7781745930509212   T   T   T
  7.7781745930509212  3.8890872965254606  0.0000000000000000   T   T   T
  7.7781745930509212 11.6672618895764000  0.0000000000000001   T   T   T
 -0.0000000000000000  7.7781745930509212  3.8890872965254610   T   T   T
 -0.0000000000000000  7.7781745930509212 11.6672618895764000   T   T   T
  0.0000000000000000  3.8890872965254606  7.7781745930509221   T   T   T
 -0.0000000000000000 11.6672618895764000  7.7781745930509221   T   T   T
  3.8890872965254606  7.7781745930509212  0.0000000000000001   T   T   T
 11.6672618895764000  7.7781745930509212  0.0000000000000001   T   T   T
  7.7781745930509212  0.0000000000000001 11.6672618895764000   T   T   T
  7.7781745930509212  0.0000000000000000  3.8890872965254606   T   T   T