10        20          30        40        50        60
AUAAUUAUUACAUAGUUUUU--|    CGC  A  C     C          U  AUAAGA 
                      GAUGU   AG UA UGCAU AGGAACUGAU GG      A
                      CUACG   UC GU ACGUA UCCUUGACUA CC      U
CCAUAAAUGACCACGAACAAAU^    ACU  C  U     A          -  ACUGAC 
 .       110       100        90        80        70