What effect does the narrator create by repeating the phrase “hung it” in the story the black cat

In Edgar Allan Poe's "The Black Cat", the narrator repeats the phase "hung it" multiple times to put an emphasis on the importance of his doing and to really accentuate the violence and the cruelty of his act: a crime that was committed out of pure viciousness.

It increases the violence of the actions and highlights the importance

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