10            20        30        40         50        
ACUGCUCACUAGUGACA----|   UC   A  C   U       CCA-        GAGAU 
                     CGUU  CGG GC UGG AACUCCA    CCGUUGGC     \
                     GCAA  GCC UG GCC UUGAGGU    GGUAACCG     U
CCAAGGUAGAGCUGCGUAAUU^   --   G  C   U       CGAG        UCAGC 
      110       100          90        80        70        60