10            20        30        40        50        60
AUACGAGACCAUGGUAA----|   ACGG     C       U     A  A     GUGUCA 
                     UGGU    UGCGA CGGAUGA GGUUC CA CGACC      U
                     ACCG    AUGUU GCCUGCU UCAGG GU GCUGG      U
GUGACUAUUUAGCAACUGUUU^   CA--     U       U     -  G     GCAAAU 
 .       110       100          90        80         70