10          20        30        40        50        60
UGUAAGUUUCUCAAUUCA--|  U        U        UU  CCAU      CAACCU 
                    AGA UUCGGAUC CCGUAGUU  GA    UUUAUC      A
                    UUU AGGUCUAG GGCGUCAA  CU    AAAUAG      A
CCACUUUUUUUUGCCAAGUG^  U        U        UU  ACGU      UGUAAU 
120       110       100        90        80        70