I love that I found this on the inter webs. Thank you!

I created a round-robin spreadsheet for 8 gift-givers giving to each other. One of the years ends up being a "giving to yourself year" so we just skip that one. But there's another year where it turns into a reciprocal gift swap (person A gives to person B, person B gives to person A), which we'd like to skip as well. But I can't figure out how to do it. Simply skipping that year means those gifters never give to each other. Can anyone think of a way to systematize it so there is no reciprocal gift swap? Or even a non-systematized way that makes it work?