system
 1.0000000
      0.000000000000      2.733099421887      2.733099421887
      2.733099421887      0.000000000000      2.733099421887
      2.733099421887      2.733099421887      0.000000000000
Si 
  2
Direct
     0.875000000000000000     0.875000000000000000     0.875000000000000000
     0.125000000000000000     0.125000000000000000     0.125000000000000000
