Si 
 1.0000000000000000
     6.6870907509953446    0.0000000000000000    0.0000000000000000
     0.0000000000000000    6.6870907509953437   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    3.7876845797502381
 Si 
   8
Selective dynamics
Cartesian
  5.4895580406457931  5.4895580406457949 -0.0000000000000000   T   T   T
  1.1975327103495483  1.1975327103495490 -0.0000000000000000   T   T   T
  1.1975327103495483  5.4895580406457931 -0.0000000000000000   T   T   T
  5.4895580406457931  1.1975327103495490 -0.0000000000000000   T   T   T
  2.1460126651481217  2.1460126651481222  1.8938422898751182   T   T   T
  4.5410780858472215  4.5410780858472233  1.8938422898751182   T   T   T
  4.5410780858472215  2.1460126651481213  1.8938422898751182   T   T   T
  2.1460126651481217  4.5410780858472233  1.8938422898751182   T   T   T