You will be given a definition of a task first, then some input of the task.
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.

Title: Tina's Pregnancy. Sentence 1: Tina and her husband have been married for several years. Sentence 2: They recently decided it was time to start a family. Sentence 3: They tried for months to get pregnant. Sentence 4: Tina is now preparing to tell her family the pregnancy news. Sentence 5: After a year, Tina finally found out she was pregnant.
Output:
45