generated by clupan
4.0
  0.000000000  0.5000000000  0.5000000000
  0.5000000000  0.000000000  0.5000000000
  2.0000000000  2.0000000000  0.000000000
 Ag Au Cu
  2  1  1
Direct
  0.000000000 0.000000000 0.000000000
  0.000000000 0.000000000 0.7500000000
  0.000000000 0.000000000 0.2500000000
  0.000000000 0.000000000 0.500000000
