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: Negative Candy Hearts. Sentence 1: Chad wasn't very romantic. Sentence 2: He knew he had to buy her a gift of some kind so he went to the store. Sentence 3: He had never had a girlfriend during Valentine's Day until now. Sentence 4: He knew she would love some candy hearts. Sentence 5: They were actually negative hearts that made his girlfriend cry.

Ex Output:
23

Ex Input:
Title: New shirt. Sentence 1: Johnny needed a new shirt. Sentence 2: He did not have enough money to buy one. Sentence 3: He ended up being able to buy two shirts. Sentence 4: He decided to go to a discount store. Sentence 5: Johnny was happy with his bargain shopping.

Ex Output:
34

Ex Input:
Title: The First Dance. Sentence 1: Her first school dance was coming up in 2 weeks. Sentence 2: Ellen was a freshman in high school. Sentence 3: Ellen went to the mall to pick out a dress. Sentence 4: She chose a white one with lace. Sentence 5: When the day came she got dressed and felt like a princess.

Ex Output:
21