10        20        30          40        50        60  
CAAAGGUUUUUGUUUUUUUUUGAUA        --|     U             GUUUUUCC 
                         AACAUUUU  UCAUUC UAAACAAUGAAUA        \
                         UUGUAAAG  AGUAAG AUUUGUUGCUUAU        A
UCUAUUUCUAUGCUCCUAUUUACGA        AG^     U             GAAACAGU 
   120       110       100        90        80        70