10          20        30        40        50        60
AAAACGUGAAUUCACAU--|  A   U    CU         CCC           GUCAC 
                   GGC GUU GAGG  GUAAACAUC   GACUGGAAGCU     U
                   CCG CAG CUCC  CAUUUGUAG   CUGACUUUCGA     C
GGCAGCGGCACCUCGUCCU^  C   C    CC         U--           GACGA 
.       110       100        90        80          70