10            20        30        40        50        60        
UCCGGAGGCUCCCGACA----|  UG  C     U                 U   GGUCGGGUUGUGACA 
                     CCA  GC CUGGC GAGGUAGUAGUUUGUGC GUU               U
                     GGU  CG GAUCG UUCCGUCAUCGAACGCG CAA               U
GGAGGCGCCGCGACUCGUAGU^  --  U     -                 U   UAGAGGUGUCGCCCG 
     130       120         110        100        90        80        70