18  ENERGY = -3.4  1
    1 G       0    2    0    1
    2 G       1    3   17    2
    3 C       2    4   16    3
    4 C       3    5   15    4
    5 A       4    6    0    5
    6 G       5    7    0    6
    7 G       6    8    0    7
    8 A       7    9    0    8
    9 C       8   10    0    9
   10 U       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    4   15
   16 G      15   17    3   16
   17 C      16   18    2   17
   18 A      17    0    0   18