So you could put nine of the things in the first position, then eight in the second, seven in the third, so forth and so on. It essentially becomes 9 factorial, times 2, times 1. And we've seen this multiple times. This is essentially 36 choose 9. This expression right here is the same thing, just so you can relate it to the, I guess, combinatorics formulas that you might be familiar with. This is the same thing as 36 factorial over 36 minus 9 factorial, that's what this orange part is over here, divided by 9 factorial, or over 9 factorial. What's green is what's green, and what is orange is what's orange there.