10        20          30        40        50         
CAUGUCCCGUCCCCUGCA   --|  U      G        A         AGUUUGCA 
                  GGG  CCC GGCUGG AUAUCAUC UAUACUGUA        \
                  CCC  GGG CUGAUC UGUAGUAG AUAUGACAU        A
ACAGUCCGAGGUCUCGAC   AU^  C      A        -         CAUAGAGU 
      110       100        90        80         70        60