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