here here's all the natural numbers and what we do is we partition it into two sets one set for a and one set for B and so I'll just write down what those sets are and then and then talk about why we chose those sets so we're gonna write down one set for a and this is going to be 0 4 8 and so on and this is a partition so the the separate B is just all the other numbers so that's 1 2 3 5 6 7 1 so on so just a draw draw it out here these numbers here for an 8 correspond to 8 and these all the other numbers correspond to be I'm saying