10          20        30        40        50        60
AAGAACAAAUUAAAAAU--|  C         A       C        U  AGUUGCCUC 
                   GGU CUUGCCCUC AGGAGCU ACAGUCUA UG         U
                   UCA GGACGGGAG UCCUCGA UGUUAGAU AC         C
GAAAAAGGUCUACUUGUUU^  C         G       A        C  CCUUUCAAU 
120       110       100        90        80        70