20  ENERGY = 1.8  pBS33
    1 C       0    2    0    1
    2 T       1    3   15    2
    3 G       2    4   14    3
    4 G       3    5   13    4
    5 C       4    6   12    5
    6 C       5    7   11    6
    7 C       6    8    0    7
    8 G       7    9    0    8
    9 G       8   10    0    9
   10 C       9   11    0   10
   11 G      10   12    6   11
   12 G      11   13    5   12
   13 C      12   14    4   13
   14 T      13   15    3   14
   15 A      14   16    2   15
   16 A      15   17    0   16
   17 G      16   18    0   17
   18 G      17   19    0   18
   19 A      18   20    0   19
   20 T      19    0    0   20