10          20        30        40        50    
UUGACAUAAAAGCAAAUGC--|      A           GU            U 
                     UAUUUAU UCAUUACCAGU  GCACAUUUAACA U
                     AUAAAUA AGUAAUGGUCA  CGUGUAAAUUGU A
UGUAUUCGUCUCUAUUUUGUC^      A           AC            U 
.       100        90        80        70        60