Classify the input text into either disfluent questions or proper questions. A disfluent question is a question that has some interruptions in it while framing. A proper question is the correct form of the question without any disfluency.

Q: How many er uh what do B cells help T cells produce?

A: disfluent
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Q: In what century did all of the dead branches dry up?

A: proper
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Q: The Deutsce Bundespost bought what kind of interface look a likes?

A:
proper
****