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: The Lumberyard. Sentence 1: Bart was building a deck. Sentence 2: He appreciated their good customer service. Sentence 3: He bought seventeen boards. Sentence 4: He couldn't fit them in his truck, so the lumberyard delivered. Sentence 5: He went to the lumberyard to buy supplies.
52