10         20         30        40        50    
AGAACUUUCCCAAUCUCU-   U-|              C         U   UG 
                   GCA  AGGCUUUGUAAUCAU UGACAUUUG AGC  G
                   UGU  UCCGAAACAUUAGUA GCUGUAAAC UCG  U
UUAAAUUUCUUGAAAAUUC   UU^              A         C   AA 
.       100        90        80        70        60