20  ENERGY = 1.7  pBS33
    1 G       0    2    0    1
    2 A       1    3    0    2
    3 C       2    4    0    3
    4 C       3    5   13    4
    5 G       4    6   12    5
    6 G       5    7   11    6
    7 G       6    8    0    7
    8 C       7    9    0    8
    9 C       8   10    0    9
   10 G       9   11    0   10
   11 C      10   12    6   11
   12 C      11   13    5   12
   13 G      12   14    4   13
   14 A      13   15    0   14
   15 U      14   16    0   15
   16 U      15   17    0   16
   17 C      16   18    0   17
   18 C      17   19    0   18
   19 U      18   20    0   19
   20 A      19    0    0   20