$cell vectors
1.0
  6.3219970252349214    0.0000000000000000    0.0000000000000000
  0.0000000000000000    6.3219970252349214    0.0000000000000000
  0.0000000000000000    0.0000000000000000   12.6049940688209769
 8 2 4
Direct
  0.2652000000000003    0.2284000000000004    0.1331999999999999 # I1
  0.7652000000000008    0.7284000000000002    0.6332000000000001 # I2
  0.2284000000000004    0.7348000000000006    0.8668000000000000 # I3
  0.7284000000000002    0.2348000000000001    0.3667999999999999 # I4
  0.7348000000000006    0.7716000000000004    0.1331999999999999 # I5
  0.2348000000000001    0.2716000000000000    0.6332000000000001 # I6
  0.7716000000000004    0.2652000000000003    0.8668000000000000 # I7
  0.2716000000000000    0.7652000000000008    0.3667999999999999 # I8
  0.0000000000000000    0.0000000000000000    0.0000000000000000 # Hg1
  0.5000000000000004    0.5000000000000004    0.4999999999999998 # Hg2
  0.0000000000000000    0.0000000000000000    0.4999999999999998 # Ag1
  0.0000000000000000    0.5000000000000004    0.2499999999999999 # Ag2
  0.5000000000000004    0.5000000000000004    0.0000000000000000 # Ag3
  0.5000000000000004    0.0000000000000000    0.7499999999999996 # Ag4