10            20        30        40         50        60
AAAUAGGCGGCUGAGAA----|   UC       UA         A      U-   GCUGGAG 
                     CUGG  GGUGAUU  GGUAGUUUC UGUUGU  GGG       C
                     GACU  UCAUUAA  CCGUCAAAG ACGACA  UCU       U
CUGGGCGAACUACUCAUGUUU^   --       GC         C      UC   CUCUCUC 
 120       110       100          90        80        70