In the cambridge encyclopedia of language (cambridge university press,1987), author david crystal presents five sentences that make a reasonable paragraph regardless of their order. the sentences are as follows: mark had told him about the foxes. john looked out the window. could it be a fox? however, nobody had seen one for months. he thought he saw a shape in the bushes. how many different five-sentence paragraphs can be formed if the paragraph begins with "he thought he saw a shape in the bushes" and ends with "john looked out of the window? "