10          20        30        40        50        60  
UCGUCAUGCAGGUAUUU--| A        GA         AG   AUA       AUGAAAA 
                   GC UCUCUUGA  AAAUGUAGU  ACU   AGUAUAC       \
                   CG AGGGAACU  UUUGUAUCA  UGA   UCAUAUG       U
GUGCAGAGGGAGACUUCAC^ C        AA         CA   A--       AGGGACG 
 120       110       100        90        80          70