10            20        30        40        50         
UCAGCGACUCGUCUACC----|  A    AA   U       UU       G     GUAUU 
                     GAC GGCU  UUA CUUUGGU  UCUAGCU UAUGA     \
                     CUG CCGG  AAU GAGGCCA  GGAUCGA AUACU     G
CAAUACUGUAACAUCUAGUUU^  -    G-   U       UU       A     ACAGA 
       110       100          90        80        70        60