10          20        30        40        50         
CUUUUGGAAAACCAACU--| AU     A  GA   C      U          GUCGAU 
                   GG  UUUGG AG  ACC UGUGGA ACGGGCUUGU      \
                   CC  AAACC UC  UGG ACAUUU UGCUCGAACA      U
UUUACAACAUCUACCUUAA^ AU     C  UG   A      U          ACUACA 
       110       100        90        80        70        60