10         20         30        40        50        
ACGUGGAACAAAUUGGGC-   G  ACU-|           C    UUC     GUGAC 
                   CCA CG    GUUCCGUGCUUC UUAC   CCAUA     U
                   GGU GC    CGAGGUAUGAAG AAUG   GGUAU     A
ACAACUAUAGCUUCUAUUC   G  GCGU^           A    UAA     GCAGU 
      110       100        90        80        70        60