10          20        30        40        50          
CAUAUUCCCUAAAAAGC--|  C         C       G    C     U  CAUGUCC 
                   UGG CACCGGGUC GGGUUUU UUUU CUUCA AC       \
                   AUC GUGGUCUAG CCCGAGA AAGA GAAGU UG       G
CAAUCCUGUUCCUCGACCG^  U         C       G    U     U  AUAUAAA 
 .       110       100        90        80        70