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: True Gossip. Sentence 1: Gary gossiped with his friends. Sentence 2: He mad his friends promise to remove the gossip from online. Sentence 3: Gary found the gossip they had posted. Sentence 4: He called his friends. Sentence 5: His friends posted the gossip online.
A:
52