10          20        30         40        50     
GGUGGAAAGAGCUGAGGA--|    U   U  U     A  -       U     UU 
                    CAGGC AGG GU ACGCG UC CCUAGGU ACCAU  \
                    GUUCG UCC CG UGUGC AG GGAUUCA UGGUA  A
CAUGUACAUACCAAUAUAAA^    U   U  U     -  A       U     UA 
 .       100        90        80         70        60