20  ENERGY = -2.1  1
    1 A       0    2    0    1
    2 C       1    3    0    2
    3 A       2    4    0    3
    4 C       3    5    0    4
    5 C       4    6   15    5
    6 T       5    7   14    6
    7 C       6    8   13    7
    8 G       7    9    0    8
    9 C       8   10    0    9
   10 A       9   11    0   10
   11 G      10   12    0   11
   12 A      11   13    0   12
   13 G      12   14    7   13
   14 A      13   15    6   14
   15 G      14   16    5   15
   16 T      15   17    0   16
   17 C      16   18    0   17
   18 G      17   19    0   18
   19 G      18   20    0   19
   20 T      19    0    0   20