user
It takes one word to separate them; otherwise they are inseparable.  What are they?
A: request
B: facial
C: lips
D: utterance
E: arse
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

C

<|end_of_solution|>