18  ENERGY = 1.3  forward
    1 C       0    2    0    1
    2 C       1    3    0    2
    3 G       2    4   16    3
    4 C       3    5    0    4
    5 C       4    6    0    5
    6 G       5    7    0    6
    7 G       6    8    0    7
    8 T       7    9    0    8
    9 G       8   10    0    9
   10 T       9   11    0   10
   11 A      10   12    0   11
   12 G      11   13    0   12
   13 G      12   14    0   13
   14 A      13   15    0   14
   15 G      14   16    0   15
   16 C      15   17    3   16
   17 T      16   18    0   17
   18 G      17    0    0   18