10          20        30        40        50       
NNNNNNNNNNNNNNNNNN--|   UU          U     CG   G  A   GGAU 
                    GGAG  GAGGACUGGG CUUUG  GGC AG UGA    G
                    CCUU  CUCUUGACCC GAAAC  CCG UC ACU    U
CUCUCCCCGCGUCCAGAAAC^   GG          U     AU   G  A   UAAC 
    110       100        90        80        70        60