10          20        30        40        50        60  
CCCCCCCCCCCCCCCCC--|  CCU      C         UGC      CU U  GUGUGUG 
                   GUG   CCGGGG AGGGGGCCG   CACUGU  G GA       \
                   CAC   GGCCCC UUCUCUGGC   GUGACA  C CU       U
CGCUGGAAACCUGCUCUCA^  CAC      U         CAA      -- U  CCUUCGU 
 120       110       100        90        80          70