10            20        30        40        50          
UAAACGUAACAAAAACU----|    ACG   UA    A     AG          UUAUAAU 
                     GGUUU   CCA  AGCG GGUAU  AGUUCCUACG       \
                     CCGAG   GGU  UCGU CCAUA  UCAAGGAUGU       A
GAAUAAACUUUCAACAAAUAA^    A--   UC    G     CU          CUAUUAU 
 .       110       100          90        80        70