What is an example of a anaphora in the tell tale heart?

In Edgar Allan Poe's "The Tell-Tale Heart," an example of anaphora can be found in the repetition of the phrase "It is the beating of his heart!" This phrase emphasizes the narrator's obsession and escalating madness as he becomes increasingly fixated on the sound of the old man's heart. The repetition heightens the tension and conveys the narrator's psychological turmoil throughout the story.