10           20        30        40         50          
UUUCAAGAAAGUUUUAU---            A    U    G    -|       UUGGUCU 
                    CCAAUUCUCAGG UUCU CUCA GGUU UACAUGUU       \
                    GGUUGGGGGUCC GAGG GAGU CCAA AUGUAUAA       A
UGUCGCUUCGACAACUGAUU            A    U    G    C^       AGUAUAA 
 120       110       100        90        80        70