10          20        30        40        50        60  
GCAGGACCGUUCCUGCU--|       U     U        UCU        GCUUGCUCCG 
                   GCGCGGCU UCCCU GUGCUUGA   AACCAUGU          A
                   UGUGCCGG AGGGA CACGAACU   UUGGUACA          A
UCUUCCUUCCGUCCUUCUU^       C     C        UCC        ACAAAAGCGC 
    120       110       100        90        80        70