Problem: Produce a sentence that would be considered grammatically acceptable

Answer: I like Mary and she likes me.

Problem: Produce a sentence that would be considered grammatically unacceptable

Answer: The more John meets geniuses, the angrier he gets.

Problem: Produce a sentence that would be considered grammatically unacceptable

Answer:
It is put a picture of Bill on your desk before tomorrow that this girl in the red coat will.