10          20        30        40        50        60        70         
UCAAUUGAACUACAUUUC--|           C                    UAGACAACUAUUGACAAUCAGGAAGCA 
                    UCGUAGUUUUAC UCACAGACUGACCUUAAGUU                           \
                    AGUAUCAAAAUG AGUGUCUGACUGGAAUUCAA                           G
AACACCUUUAACAACUUAAA^           U                    UCUGUUGGUAACUUUUAGUUCUUUGUC 
       150       140       130       120       110       100        90        80