Mg Sn 
 1.0000000000000000
     5.0544806141303429   -0.0000000000000000   -0.0000000000000000
    -2.5272403070651714    4.3773086147728488    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.5264663632473514
 Mg  Sn 
   4   2
Selective dynamics
Cartesian
  0.0000000000000000  0.0000000000000000  0.0000000000000000   T   T   T
  0.0000000000000000  0.0000000000000000  3.2632331816236753   T   T   T
 -0.0000000000000008  2.9182057431819004  1.6316165908118376   T   T   T
  2.5272403070651719  1.4591028715909504  4.8948497724355127   T   T   T
 -0.0000000000000008  2.9182057431819004  4.8948497724355127   T   T   T
  2.5272403070651719  1.4591028715909504  1.6316165908118376   T   T   T