10         20        30         40        50        60
AAACAAAUCAGAAAUAUU-            A-|   U  U         CUA  GUAAUU 
                   GCAAAUAAAGGA  GCAA UC UGGCGCAUU   CA      U
                   CGUUUAUUUCUU  CGUU AG ACCGCGUAA   GU      U
AGUCAGAAACUACGUUCUU            CA^   U  U         AC-  ACAAUA 
 .       110       100        90        80        70