10          20        30         40        50        60  
CGUGGAUGUUGGAUACA--             -|         U       CU    UUGUGUC 
                   UUUUCUUCUGGAA GCUGGUUUCA AUGGUGU  UAGA       U
                   GAAGGAGGAUCUU UGACUAAAGU UACCACG  AUCU       G
UUAGGUGAAACAACGAUAA             G^         U       --    UAGUCGU 
   120       110       100        90        80          70