10            20        30        40         50          
AUGGUUGCAUGUCAUCU----|   CU       G         -             UUUUCU 
                     UAGC  GUCUUCG UCGUCAGAG UGGUUGUGAUGUG      \
                     GUUG  UAGAGGC AGUAGUUUC ACCGACACUAUAC      G
AUUUUAACUUCUUCAAUUCGU^   --       G         G             UAAACU 
120       110       100          90        80        70