10            20        30        40        50         
CACAGAUAACAAAUACAA----|   UU  AU          C  A      A    GUCAU 
                      CUUG  GC  UUCCUUGUCA AC UUCGUC CAGU     \
                      GAAC  CG  AGGGAAUAGU UG AGGCAG GUCA     U
CUACUGUAACACUUUUUCAAGG^   --  CU          C  G      -    CAAAC 
      110       100          90        80        70         60