Ar 
 1.0000000000000000
     5.2921603615453146    0.0000000000000000   -0.0000000000000000
     0.0000000000000000    5.2921603615453146    0.0000000000000000
    -0.0000000000000000    0.0000000000000000    5.2921603615453137
 Ar 
   4
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  2.6460801807726573  2.6460801807726568   T   T   T
  2.6460801807726573  0.0000000000000000  2.6460801807726568   T   T   T
  2.6460801807726573  2.6460801807726573  0.0000000000000000   T   T   T