Instructions: In this task, you're given a short story of five sentences written in natural language. However, the order of the given story is not correct. Your job is to return the correct order for the given five sentences to create a coherent short story with the new order that has the correct flow. Generate your answer using the number of sentences in the correct order, such as '23415'.
Input: Sentence1: Pat is happy. Sentence2: Pat aces his test. Sentence3: Pat makes flashcards to read on the bus. Sentence4: He studies very hard for a week. Sentence5: Pat has a math test coming up.
Output:
54321