So this blue strand begins at the five N and ends at the three end. And this green strand begins at the three N and ends at the five N. That's what we mean by antiparallel. Now, we also have the base pairing between the two single strands and that's what holds the two strands together. So we have the adenine children red, we have the thymine shown in dark purple, we have the orange, that's the guanine, we have the cytosine, that's the light purple. And so what we mean by palindromic sequences of DNA, if we read these bases going this way, we get the same exact reading if we go backwards. So going this way along the blue single strand we have aagct.