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: New job. Sentence 1: She was very nervous. Sentence 2: Allison started a new job today. Sentence 3: Allison just graduated college and this was her first job. Sentence 4: She knew that this was huge. Sentence 5: She did very well on her first day.
A: 
21