23  1
    1 A       0    2    0    1
    2 C       1    3    0    2
    3 A       2    4    0    3
    4 G       3    5    0    4
    5 C       4    6   22    5
    6 G       5    7   21    6
    7 C       6    8   20    7
    8 G       7    9   19    8
    9 C       8   10    0    9
   10 C       9   11    0   10
   11 C      10   12    0   11
   12 G      11   13    0   12
   13 A      12   14    0   13
   14 C      13   15    0   14
   15 T      14   16    0   15
   16 T      15   17    0   16
   17 A      16   18    0   17
   18 C      17   19    0   18
   19 C      18   20    8   19
   20 G      19   21    7   20
   21 C      20   22    6   21
   22 G      21   23    5   22
   23 G      22    0    0   23