20  ENERGY = 1.9  1
    1 C       0    2    0    1
    2 C       1    3    0    2
    3 A       2    4    0    3
    4 C       3    5   19    4
    5 C       4    6   18    5
    6 C       5    7   17    6
    7 A       6    8    0    7
    8 G       7    9    0    8
    9 G       8   10    0    9
   10 G       9   11    0   10
   11 A      10   12    0   11
   12 G      11   13    0   12
   13 A      12   14    0   13
   14 G      13   15    0   14
   15 A      14   16    0   15
   16 A      15   17    0   16
   17 G      16   18    6   17
   18 G      17   19    5   18
   19 G      18   20    4   19
   20 A      19    0    0   20