10             20        30          40        50        60     
AAAAACCUUCAGAAGCA-----|   U   UGAA     --        A     CCGAAGCAUCAUGUCC 
                      AGGU UUC    CUGCC  GGGAAACU CAGGA                \
                      UUCG AAG    GACGG  UCUUUUGG GUCCU                U
CACCGGGAACUCCUGUAUACAC^   U   ----     UU        -     CCGUACAACGUCUUAC 
 .       120       110           100        90         80        70