Firstly find yourself an override terminal
To hack it you right click on it and provide DNA Profile, when you do this appears.
Now the first letter of that sequence is G as we are reminded we complete missing pairs, A<>T and C<>G
So as it's a G we select a C
Now we matched 1 so it tells me
And we continue onwards, at some point (here at after doing this 19 more times)
We have a problem, there's a T at the start of the chain but no A, so we just say okay and...
It tells me I matched 0, great! So I try again until I get one I can match.
You'll have 22 matched chains and only one letter left, we choose that chain and....
DNA Sequencing complete! Yay me!