unknown system                          
           1
     2.715000    2.715000    0.000000
     0.000000    2.715000    2.715000
     2.715000    0.000000    2.715000
   Si
     2
Direct configuration=     1
   0.00000000  0.00000000  0.00000000
   0.25000000  0.25000000  0.25000000
