default -> -   (Coverage 200, error 5.5%, error without exceptions 50.0%)
   unless GATGAG -> +   (Coverage 96, error 3.1%, error without exceptions 45.8%)
      unless AAATTT -> -   (Coverage 43, error 4.7)%
      or AAGGG -> -   (Coverage 4, error 0.0)%
   or AAATTT -> +   (Coverage 101, error 7.9%, error without exceptions 50.5%)
      unless GATGA -> -   (Coverage 48, error 8.3)%
      or ACAAAA -> -   (Coverage 5, error 0.0)%
