10        20          30        40        50        60  
AGUAGGAAUGGUAAGAUAUUAAAUAUGA--|       CA    A    GU    GUAUUUCC 
                              UGAAGAAU  CCUU AGCU  GGUC        A
                              GCUUCUUG  GGAA UCGG  CUAG        C
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNA^       AC    C    --    CUCGUGAG 
  120       110       100        90        80          70