10          20        30        40          50       
AAACAUAGUAAUGUUUU--    U  UCU               --|     U  AAGAA 
                   GCAG CC   GUUAGUUUUGCAUAG  UUGCAC AC     G
                   UGUC GG   UAGUCAAAACGUAUC  AACGUG UG     A
GCCAAAAUACAUCCGUUAU    C  UGU               UA^     U  AUGUA 
      110       100        90        80        70        60