(Cs2AgBiBr6)4  (Fm-3m) ~ Cs2AgBiBr6_mp-1
           1
     0.000000    5.583188    5.583188
     5.583188    0.000000    5.583188
     5.583188    5.583188    0.000000
   Cs   Ag   Bi   Br
     2     1     1     6
Direct configuration=     1
   0.25000000  0.25000000  0.25000000
   0.75000000  0.75000000  0.75000000
   0.50000000  0.50000000  0.50000000
   0.00000000  0.00000000  0.00000000
   0.74581981  0.25418019  0.25418019
   0.25418019  0.74581981  0.74581981
   0.25418019  0.25418019  0.74581981
   0.74581981  0.74581981  0.25418019
   0.25418019  0.74581981  0.25418019
   0.74581981  0.25418019  0.74581981