10        20          30        40        50          
AACACUUCUCCAGGCACU  UA  C--| A  C     A    A        UAAGUUACU 
                  GA  CU   CU GA GAGGC AAGC GGAGUUCA         \
                  CU  GA   GA CU CUCCG UUCG CCUCGAGU         U
UUUACAACACUACUCAGC  GC  CUA^ C  A     A    C        UUGUCAAGU 
 .       110       100        90        80        70