10            20        30        40        50        60 
GCUUCGGGGCUCCCUCU----|  CUC        U        U           CAUUCGUU 
                     GGC   CAGGGCCU GUACAUGG AGGCUUUCAUU        \
                     CCG   GUCUCGGA CGUGUGCC UCUGGAAGUGG        U
UGCAGGGAAAUGAACUACGGA^  U--        C        U           CUUACACG 
 120       110       100          90        80        70