Detailed Instructions: In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to arrange the sentences in order to make a story that makes complete sense and is apt for the title. Indicate your answer using the number of the sentences in order, such as '34152'.
Q: Title: Mistake. Sentence 1: They vowed to never make that same mistake again. Sentence 2: Harry and Larry failed their test. Sentence 3: On the day of the test they were both unprepared. Sentence 4: They chatted instead of studying. Sentence 5: Harry met Larry at the library to study for the big test.
A:
54321