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: Sam Cheats On A Test. Sentence 1: Sam's science teacher announced they would be having a science test. Sentence 2: Sam was in his high school science class. Sentence 3: Sam decided to go party the night before the test instead of studying. Sentence 4: Sam was not prepared for the test and decided to cheat. Sentence 5: Sam was caught by his science teacher and given an F.
12

Title: Broken Phone Screen. Sentence 1: His screen shattered on the floor. Sentence 2: Tom's phone fell out of his pocket. Sentence 3: Tom couldn't afford to get a new phone. Sentence 4: He found a cheap replacement screen online. Sentence 5: He replaced it himself with a youtube video.
21

Title: Gabe's Dig. Sentence 1: After graduation, Gabe was offered a faculty position at his school. Sentence 2: He spent one summer on a dig in Utah. Sentence 3: Gabe found a rare dinosaur bone, and wrote a paper about it. Sentence 4: The faculty of his university department were impressed with his work. Sentence 5: Gabe was a graduate student studying archaeology.
51