Si 
 1.0000000000000000
     6.6199148077021359    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    6.6199148077021368   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.8525541756756176
 Si 
   8
Selective dynamics
Cartesian
  5.4381372273349289  5.4381372273349253 -0.0000000000000000   T   T   T
  1.1817775803672075  1.1817775803672073 -0.0000000000000000   T   T   T
  1.1817775803672075  5.4381372273349253 -0.0000000000000000   T   T   T
  5.4381372273349289  1.1817775803672073 -0.0000000000000000   T   T   T
  2.1281798234838605  2.1281798234838591  1.9262770878378097   T   T   T
  4.4917349842182777  4.4917349842182759  1.9262770878378097   T   T   T
  4.4917349842182777  2.1281798234838583  1.9262770878378097   T   T   T
  2.1281798234838605  4.4917349842182759  1.9262770878378097   T   T   T