10          20        30        40         50        60  
CAUGGAUCCAUUCUACU--| A          A  A        UCCGC-      GUGCUCAU 
                   GC CGUUUCCGUU CG UGUUGACU      UCCUCU        \
                   CG GCAAAGGUAG GC ACAACUGA      GGGAGA        G
UAAGACAAACAUCAAAAAC^ C          A  -        UGUCCA      UCAAUGUU 
   120       110       100         90        80        70