Given the task definition and input, reply with output. 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: Star Gazing. Sentence 1: Her favorite constellation is the Big Dipper. Sentence 2: Since the time she was a little girl she has been mesmerized by them. Sentence 3: On a clear summer night Traci likes to look at the stars. Sentence 4: She also loves the Aurora Borealis. Sentence 5: If it's a clear night you know just where she can be found!
13