10          20        30        40        50     
CAUCUUCCAGAAAAGAUA--|       A        C      GU        AU 
                    AACUGAAA UUUAGGAA CGGUCA  CGCCAACC  \
                    UUGACUUU AAAUCCUU GUUAGU  GUGGUUGG  G
CGUUGUUCAAGCUUACGUAA^       A        A      AG        UU 
 .       100        90        80        70        60