10          20        30        40        50        60  
CAGUAGUAGUGUAAAUU--|      U              CA  A         AUUGAGCU 
                   GUUUUGU GUUUGCGGGUGGAU  CG UGCAAUUUU        U
                   UAAGACG CAAAUGUCUACCUA  GC ACGUUAAAA        G
UCGUAAUGGAUACUUGACG^      C              UG  -         AGAGGAUG 
   120       110       100        90         80        70