Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Title: Ashamed to be bald. Sentence 1: He didn't want anyone to know. Sentence 2: Calvin was very sensitive about his bald head. Sentence 3: So he always wore a toupet to hide his baldness. Sentence 4: When one day someone grabbed him by his hair, the toupet came off. Sentence 5: Calvin had to accept who he was and stayed bald for all to see.
Student:
12