10         20        30         40        50 
UACCAGGCAUCAGACCU-  G  C        -|                CG 
                  GG GC UGCCAGGA AACCGUUACCAUUAUUG  \
                  CC CG GCGGUUUU UUGGCAAUGGUAAUAAU  U
CCGUAAGGCAACUUUUCA  A  U        C^                UG 
 100        90        80        70        60