default -> -   (Coverage 200, error 33.5%, error without exceptions 50.0%)
   unless AAAG -> +   (Coverage 62, error 38.7%)
   or AAACG -> +   (Coverage 21, error 28.6%)
   or CCGTT -> +   (Coverage 8, error 0.0%)
   or CGCGT -> +   (Coverage 11, error 18.2%)
   or CCATA -> +   (Coverage 18, error 22.2%)
   or TTCCG -> +   (Coverage 16, error 25.0%)
