  30
 units: A
      Si                   7.679425    1.105317   -0.236602
      Si                   7.679425   -1.105317    0.236602
      Si                   5.807553    2.223917    0.129921
      Si                   5.807553   -2.223917   -0.129921
      Si                   3.853012    1.121827   -0.227295
      Si                   3.853012   -1.121827    0.227295
      Si                   1.936491    2.213486    0.180469
      Si                   1.936491   -2.213486   -0.180469
      Si                   0.000000    1.124873   -0.215766
      Si                  -0.000000   -1.124873    0.215766
      Si                  -1.936491    2.213486    0.180469
      Si                  -1.936491   -2.213486   -0.180469
      Si                  -3.853012    1.121827   -0.227295
      Si                  -3.853012   -1.121827    0.227295
      Si                  -5.807553    2.223917    0.129921
      Si                  -5.807553   -2.223917   -0.129921
      Si                  -7.679425    1.105317   -0.236602
      Si                  -7.679425   -1.105317    0.236602
      H                   -1.935295   -3.669011    0.156885
      H                    1.935295   -3.669011    0.156885
      H                    8.976495   -1.822553    0.064113
      H                    5.800341   -3.680745    0.194473
      H                    5.800341    3.680745   -0.194473
      H                    8.976495    1.822553   -0.064113
      H                    1.935295    3.669011   -0.156885
      H                   -1.935295    3.669011   -0.156885
      H                   -8.976495   -1.822553    0.064113
      H                   -8.976495    1.822553   -0.064113
      H                   -5.800341    3.680745   -0.194473
      H                   -5.800341   -3.680745    0.194473
