10          20        30        40        50        
AGGGUCCCCGAAAUAAA--|    U  AA   A        G     C      GAAAC 
                   ACCCA GG  GGG ACGGCUCU CAAGC GGGGAU     \
                   UGGGU CC  CUC UGCUGAGA GUUCG UCUCUA     A
CACACAACACUUCUUUUCG^    U  GG   A        A     U      UCAAA 
     110       100        90        80        70        60