Answer:
ta-pocketa-pocketa-pocketa-pocketa-pocketa
Step-by-step explanation:
Thuber effectively used onomatopoeia to describe the sound of the cylinders, as seen in the sentence, “The pounding of the cylinders increased: ta-pocketa-pocketa-pocketa-pocketa-pocketa." Here, Thurber used onomatopoeia to make the sound of the cylinders seem much more vivid.