I can't say with certainty, but I learned the DNA printer makes shorter sequences that then self-assemble into the final strand. So if you have too many repeati

I can't say with certainty, but I learned the DNA printer makes shorter sequences that then self-assemble into the final strand. So if you have too many repeating AAA's, you can't control if there's 20 or 100 because new AAA sequences will keep latching on to the end of the strand. So, you break it up every so often with some other nucleotides.