$cell vectors
1.0
  6.6699968614863874    0.0000000000000000    0.0000000000000000
  0.0000000000000000    6.6699968614863874    0.0000000000000000
  0.0000000000000000    0.0000000000000000    6.6699968614863874
 8
Direct
  0.0000000000000000    0.0000000000000000    0.0000000000000000 # F1
  0.2500000000000004    0.5000000000000000    0.0000000000000000 # F2
  0.7499999999999997    0.5000000000000000    0.0000000000000000 # F3
  0.5000000000000000    0.5000000000000000    0.5000000000000000 # F4
  0.0000000000000000    0.7499999999999997    0.5000000000000000 # F5
  0.0000000000000000    0.2500000000000004    0.5000000000000000 # F6
  0.5000000000000000    0.0000000000000000    0.2499999999999996 # F7
  0.5000000000000000    0.0000000000000000    0.7499999999999997 # F8