Si2
1.0
   0.0000000000000000    2.7344629562984917    2.7344629562984917
   2.7481012601362367    0.0000000000000000    2.7344629562984917
   2.7481012601362367    2.7344629562984917    0.0000000000000000
Si
2
direct
   0.0000000000000000    0.0000000000000000   -0.0000000000000000 Si
   0.2500000000000000    0.2500000000000000    0.2500000000000000 Si
