10            20        30        40        50        60  
GAAUGGUGUCAGAUGGG----|   UA    CU       C    UU           GUGAAAU 
                     CAGU  CAGC  CUGUAAA AUCC  GACUGGAAGCU       A
                     GUCG  GUCG  GACAUUU UAGG  CUGACUUUCGA       A
CUAGAACAUUUUCCUGACAUC^   --    UC       U    --           UGAAUGU 
  120       110       100          90          80        70