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: The Sudden Waves. Sentence 1: Marisol was on the beach with her husband. Sentence 2: They were just lucky they didn't get pulled in. Sentence 3: Suddenly a huge wave came out of nowhere. Sentence 4: The couple ran but still got their legs submerged in seawater. Sentence 5: They were enjoying the small surf over their toes.
25