Si 
 1.0000000000000000
     6.6412945493621853   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    6.6412945493621836   -0.0000000000000000
     0.0000000000000000   -0.0000000000000000    3.9356202072066728
 Si 
   8
Selective dynamics
Cartesian
  5.4395292454876421  5.4395292454876403 -0.0000000000000000   T   T   T
  1.2017653038745391  1.2017653038745388 -0.0000000000000000   T   T   T
  1.2017653038745391  5.4395292454876394 -0.0000000000000000   T   T   T
  5.4395292454876421  1.2017653038745388 -0.0000000000000000   T   T   T
  2.1188819708065512  2.1188819708065507  1.9678101036033366   T   T   T
  4.5224125785556319  4.5224125785556293  1.9678101036033366   T   T   T
  4.5224125785556319  2.1188819708065498  1.9678101036033366   T   T   T
  2.1188819708065512  4.5224125785556293  1.9678101036033366   T   T   T