10          20        30        40        50        60
CCAAGGAUUAAGAGCAU--|       CU         CU       AUG     AUAUAU 
                   AAUCUUCA  CGUAGGGGG  CACAUUG   UCAUA      C
                   UUGGAAGU  GUGUCCCUC  GUGUGAC   AGUAU      A
GAUUCCAUAAACUACGAGC^       AG         CU       AG-     UCAAUU 
 .       110       100        90        80         70