Si 
 1.0000000000000000
     6.6201478484225493    0.0000000000000003   -0.0000000000000000
    -3.3100739242112747    5.7332162135428382   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000   10.8237804038723091
 Si 
   2
Selective dynamics
Cartesian
 -0.0000000331013150  3.8221441614726359  2.7059451009680600   T   T   T
  3.3100738911105494  1.9110720902916529  8.1178353029041563   T   T   T