10          20        30        40        50        60
GGAAGAAUAAUAGAGGU--|  C   A   GCA                U  AGUUCCUUU 
                   GGU CCU CCC   AGGAGCUCACAGUCUA UG         U
                   UCA GGA GGG   UCCUCGAGUGUUAGAU AC         C
UGGAAAAGUCUACUCAAGU^  C   C   AGG                C  CCUCUUAGU 
120       110       100        90        80        70