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: Steve's New "Friends". Sentence 1: Once he felt better, he decided to seek out some new pals. Sentence 2: They hung out after school and picked on smaller kids. Sentence 3: One day, they decided to get some cigarettes. Sentence 4: They tried smoking, but Steve got sick to his stomach. Sentence 5: Steve started hanging out with some older kids from school.
15