Sn1
1.0
  20.0000000000000000    0.0000000000000000    0.0000000000000012
  -0.0000000000000012   20.0000000000000000    0.0000000000000012
   0.0000000000000000    0.0000000000000000   20.0000000000000000
Sn
1
direct
   0.5000000000000000    0.5000000000000000    0.4999999999999999 Sn
