10             20        30        40        50     
UCACUUAUAGUCUUAAA-----|    AGCAAA  C         AC      U    U 
                      UUGGA      AG GUCAGUGGC  AUGCAU AACU A
                      GAUCU      UC CAGUCAUUG  UACGUG UUGA U
CUUGCAUGGAGGUGACGCCGAA^    AAC---  U         CA      -    G 
 .       100        90           80        70         60