10        20          30        40        50          
AACAGCAAGCAGUAACUUUC--|       C  G     U     AU        UUAUAA 
                      GAACGGAA AC AAGUC GUGAU  UCUUCAUU      \
                      CUUGCUUU UG UUCGG UACUG  AGAAGUAA      U
CUUGCAACCUGCUUCACCACAA^       U  G     U     --        ACAAUU 
       110       100        90        80          70