10            20        30        40        50        60 
GUGACCUUCAGAGACGC----|     CA     U       U   ACA         GUGACA 
                     AAGUCA  GUGAG GUAAACA CCU   CUCUCAGUU      A
                     UUCGGU  UACUC CAUUUGU GGA   GAGGGUCGA      U
GAAGUCCUGUCGGCGUAUAGG^     --     U       U   A--         AAAGGG 
120       110       100          90        80          70