default -> -   (Coverage 200, error 11.0%, error without exceptions 50.0%)
   unless ATGAG -> +   (Coverage 101, error 8.9%, error without exceptions 46.5%)
      unless AATTT -> -   (Coverage 48, error 12.5%)
      or AAGGG -> -   (Coverage 4, error 0.0%)
   or AATTT -> +   (Coverage 105, error 12.4%, error without exceptions 50.5%)
      unless GATGA -> -   (Coverage 50, error 12.0%)
      or TCGAG -> -   (Coverage 5, error 0.0%)
