10          20        30        40        50        60 
GUUUCCUGAGGAUACGUC--|  A      CAUCUC            GACUGAUGGUAUUU 
                    CAA AUGACU      GAAUAGCGUUGU              \
                    GUU UACUGA      CUUAUCGUAACA              A
UAAUCUUUUUCAACGAACCA^  C      AAUGUU            GAGCCUAAAUAUAA 
 120       110       100        90        80        70