Just going to take this opportunity to reiterate that this is just the first pronoun and you'll be able to add another as needed. No reason for mentioning right now but wanted to clarify.
Anyway, so far we have THAT as your first pronoun. Any more letters? Choose the group of letters you want for your first pronoun.
Time to continue...
This is your second pronoun at stake. Which letter do you choose to start it off?
THAT/B... interesting. Let's see where this goes.
What's the next letter in your second pronoun?