10          20        30        40           50         
UGUGUGUUUUCCAGCUC--  AG     AGC    U       ---|       A  GUACCA 
                   GC  AGGUC   UGCU UGACGAU   GUUGCACU CU      U
                   CG  UCCGG   ACGA ACUGUUA   UAACGUGA GA      C
CGACGACGACAUCAUAUUC  CU     CUU    U       UGA^       C  AAUCGC 
 120       110       100        90        80        70        60