10          20        30        40         50        
GGCCCGCACAUUCUCGC-- G        U           A-|          GUGGAU 
                   U GCUGUUCC UUUUCCUAUGC  UAUACUUCUUU      \
                   A UGACGAGG AGAAGGGUACG  AUAUGGAGAAA      C
ACAAACCCACCCCUUCUAG G        U           CG^          UCUGGU 
      110       100        90        80        70        60