10          20        30        40        50        60  
GGUACGCCCAAGUCCUGC--|     G    CCGU                GUUUGACACUCA 
                    AGUGCU CGCU    GUAUUUGACAAGCUGA            \
                    UUACGA GUGA    CAUAAACUGUUUGACU            A
GACUACACACAACGAUUCGU^     A    ACCC                GUGAGACGGUGU 
   120       110       100        90        80        70