only

C'mon, it goes from T-45, to T-51, to maybeee T-60, to X-01, X-02, and then Hellfire. There's no 1-44, 46-50, 52-59, or any letter from T to Z. Seriously, I would love to see the prototype power armors pop up again Fallout 5. It'd be neat to see how West Tek went through creating the weapons...