10         20         30        40        50          
UCCACCGUUGUUGUUCUC-  -|                         A     AAAAAAA 
                   GC GUGGAAAUGGACUGUAUCUUCACUCG AUUUC       \
                   UG UACCUUUACCUGACGUAGAAGUGAGU UAAAG       C
ACGCCACUGACUGCAUAUU  U^                         A     AAAAGAA 
 .       110       100        90        80        70