10         20         30        40        50         
CUCGGCAGACUUCGUGU-   UC-|                 AC          UUCGCG 
                  UCC   CGGCCCCGUUCGAGACGG  UCGGCAGACG      \
                  AGG   GCUGGGGUAAGUUUUGCC  AGCCGUUUGU      U
UACGAGGAGCCACGAAAA   UGU^                 CA          UCUCUC 
       110       100        90        80        70        60