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.

Q: Title: valentine. Sentence 1: Ricard keep sending flower and chocolate every valentine. Sentence 2: Sadly, Amy never pays attention to him. Sentence 3: Ricard loves Amy. Sentence 4: Five years straight, he keep doing it. Sentence 5: Ricard successfully married Amy last year.

A: 31
****
Q: Title: science. Sentence 1: He decided to teach science. Sentence 2: He liked it a lot. Sentence 3: The man studied science. Sentence 4: His students felt his passion for the subject. Sentence 5: He was a popular teacher with the students.

A: 31
****
Q: Title: Tidy up. Sentence 1: Baby loves playing with lego blocks. Sentence 2: While playing excitedly baby created a big mess. Sentence 3: When mom asked baby to clean up she refused. Sentence 4: Mom was happy when baby tidied up, and baby got cookies! Sentence 5: Mom offered to reward with cookies after baby tidies up!

A:
45
****