$cell vectors
1.0
  5.2799975155394518    0.0000000000000000    0.0000000000000000
  0.0000000000000000    5.2799975155394518    0.0000000000000000
  0.0000000000000000    0.0000000000000000    5.2049975508300834
 2 2 4
Direct
  0.0000000000000000    0.0000000000000000    0.0000000000000000 # Cu1
  0.5000000000000000    0.5000000000000000    0.0000000000000000 # Cu2
  0.5000000000000000    0.0000000000000000    0.5000000000000000 # Fe1
  0.0000000000000000    0.5000000000000000    0.5000000000000000 # Fe2
  0.2500000000000000    0.2500000000000000    0.1900000000000004 # S1
  0.2500000000000000    0.7500000000000000    0.8099999999999998 # S2
  0.7500000000000000    0.7500000000000000    0.1900000000000004 # S3
  0.7500000000000000    0.2500000000000000    0.8099999999999998 # S4