Si 
 1.0000000000000000
     4.9407912907837783    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.9407912907837774    0.0000000000000000
     0.0000000000000000    0.0000000000000000    2.8655067788466422
 Si 
   4
Selective dynamics
Cartesian
 -0.0000000000000000  0.0000000000000000 -0.0000000000000000   T   T   T
  2.4703956453918896  2.4703956453918887  1.4327533894233211   T   T   T
 -0.0000000000000000  2.4703956453918887  0.7163766947116605   T   T   T
  2.4703956453918896  0.0000000000000000  2.1491300841349812   T   T   T