10          20        30        40        50         
CGGCCGAGGGCCCGCGU--|              AGU                 UGUCGC 
                   GCGCGCGGGCGUGUG   GUGUGUGUGUGAGUGUG      \
                   CGCGCGCCCGCACGC   CACACACGUACUCGCAC      U
CCGGCUCCCCCGUCUCGGC^              C--                 CUGGGC 
     110       100        90          80        70        60