In this task, you need to replace a letter in the sentence with another given letter.
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Question: Sentence: 'a zebra patterned set of hair brushes sitting on each other'. Replace the letter 'r' with 'a' in the sentence.

Answer: a zebaa patteaned set of haia baushes sitting on each othea


Question: Sentence: 'a mouse and keyboard sitting on a wooden desk'. Replace the letter 'a' with 'n' in the sentence.

Answer: n mouse nnd keybonrd sitting on n wooden desk


Question: Sentence: 'the tarmac is covered with rows of planes'. Replace the letter 'f' with 'c' in the sentence.

Answer:
the tarmac is covered with rows oc planes