10          20        30        40        50          
ACCAAGAAAUUACUCAA--| U   A           U  CGC           UUCACAA 
                   AC UGC UCGGUGUCAGC GU   GAUGCCUUCUU       \
                   UG ACG AGCCACAGUCG CA   UUGUGGAAGAA       U
ACCAGUAACUUCCGCUUAU^ U   A           U  CCA           CGAUCUU 
 .       110       100        90        80        70