In this task, you're given the title of a story consisting of five sentences, numbered 1 through 5. Your job is to determine which two sentences need to be swapped sentences in order to make a story that makes complete sense and is befittingly titled. Indicate your answer using the numbers of the two sentences in order, such as '34' or '25'. The first digit refers to the sentence which should come first in the story.

Ex Input:
Title: Replacing a Light-Bulb. Sentence 1: Charles got a good deal and bought it. Sentence 2: He didn't realize there were so many options. Sentence 3: He asked a worker about the different kinds. Sentence 4: The worker told him the differences and helped him select an option. Sentence 5: Charles was buying a replacement light bulb at the store.

Ex Output:
15

Ex Input:
Title: Scratch. Sentence 1: Kate and her friend had dinner at a seafood place. Sentence 2: They ate and enjoyed crab legs. Sentence 3: Kate was starting to get scared. Sentence 4: Ten minutes later she realized she was still scratching. Sentence 5: Kate noticed her friend kept scratching.

Ex Output:
53

Ex Input:
Title: The Turf. Sentence 1: The football team was excited. Sentence 2: They stepped onto the new surface and felt proud. Sentence 3: They huddled together and got excited. Sentence 4: This was their first game playing on the new turf. Sentence 5: They had a great new stadium!

Ex Output:
42