10         20         30        40        50        60          
CAGCAUCCUUGGAAGCC-   C-|   U    U                 U   GUGGGGUAGGGAAUAUU 
                  GCC  UUGC GGGG GAGGUAGUAAGUUGUAU GUU                 \
                  UGG  GGCG CUCC UUCCGUCAUUCAACAUA CAA                 U
CUAUAUUAUCAUCGUUUA   UA^   U    -                 U   UAGAGGUUUUACCCCAU 
.       130       120       110        100        90        80