10            20        30        40        50       
UUCUGGCUACUCACACA----|   CAU      AGU     A   C      G  AGCU 
                     AUGU   AGCACC   GUGAU ACA UUAGAA GG    \
                     UGCG   UUGUGG   CACUA UGU AAUCUU CU    A
CCACUCACCAAGUCCUCAGUG^   ---      ACU     C   U      A  AUUU 
  110       100        90           80        70        60