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: Here comes the heat. Sentence 1: On the street corner a man smoked a cigar. Sentence 2: The man grabbed the stranger's cigarette and lit it with his cigar. Sentence 3: The stranger had no lighter so he asked the man for his. Sentence 4: A stranger came up to him and pulled out a cigarette. Sentence 5: The two men smoked in peaceful silence until they were done.

42